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/Home/Sciences/Earth & Space/Astronomy/Celestial Bodies & Phenomenon/Planets/General Resources Recently Acquired Images of SL9 Votes:0 This page has been re-organized for easier navigation. It is arranged now through a series of hyperlinks to individual fragment events. This should save you from having to scan the entire page which was getting lengthy. QRSW impact information is at the bottom of this page. Some spectra and explanation have now been added at the bottom as well as an mpeg movie showing the evolution of the fragment R "fireball" This Resource will contain updated images of the Jupiter encounter. Images will be acquired from telescopes around the world. In addition, we have direct connection to Kitt Peak National Observatory , for purposes of quickly downloading optical images at impact times (although, in the optical little is likely to be seen). Some images from The Pine Mountain Observatory may also be fou Read More Go to Site Data Services Votes:0 Data Services Skip navigation Astronomical Applications Department Data Services Complete Sun and Moon Data for One Day Rise/Set/Twilight Table for an Entire Year What the Moon Looks Like Today Dates of Primary Phases of the Moon Altitude & Azimuth of Sun or Moon Day/Night Across the Earth Equinoxes, Solstices, Perihelion, Aphelion Julian Date/Calendar Date Conversion more... Information Center World Time Zones U.S. Time Zones Phases of the Moon Universal Time and GMT Daylight Time The Dark Days of Winter more... Publications The Almanacs Astronomical Almanac Online USNO Special Publications Technical Reports more... Software MICA NOVAS more... Other Projects Project Summaries Technical Reports About AA Mission Organization History Contact more... News Sitemap Search AA Rise/Set/Transit/Tw Read More Go to Site Earth and Moon Viewer Votes:0 Earth and Moon Viewer For fastest access, please visit our nearest mirror site: Europe North America --> Welcome to Earth and Moon Viewer. Viewing the Earth You can view either a map of the Earth showing the day and night regions at this moment, or view the Earth from the Sun , the Moon , the night side of the Earth, above any location on the planet specified by latitude, longitude and altitude , from a satellite in Earth orbit , or above various cities around the globe. Images can be generated based on a full-colour image of the Earth by day and night, a topographical map of the Earth, up-to-date weather satellite imagery , or a composite image of cloud cover superimposed on a map of the Earth, a colour composite which shows clouds, land and sea temperatures, and ice, or the global distri Read More Go to Site Europa Fact Sheet Votes:0 [ Main | News | Countdown | Search | FAQs | Glossary ] Europa, a Continuing Story of Discovery Table of Contents Overview of Europa Facts Latest Europa Science Findings Europa Images Missions Exploring Europa Educational Activities and Resources The Mythology of Jupiter and Its Satellites The Discovery of the Galilean Satellites Frequently asked Questions (FAQs) about Europa Resources Links to Related Sites Overview of Europa Facts Europa Quick-Look Statistics Discovery: Jan 7, 1610 by Galileo Galilei Diameter (km): 3,138 Mass (kg): 4.8e22 kg Mass (Earth = 1) 0.0083021 Surface Gravity (Earth = 1): 0.135 Mean Distance from Jupiter (km): 670,900 Mean Distance From Jupiter (Rj): 9.5 Mean Distance from Sun (AU): 5.203 Orbital period (days): 3.551181 Rotational period (days): 3.551181 Density ( Read More Go to Site Galileo - Countdown to Jupiter Impact Votes:0 Time Since Jupiter Impact : : Days Hours Minutes Seconds --> These images are all SIMULATED views. All of the images shown here are computer generated and are automatically updated every 5 minutes . Clicking on any of the images below will bring up higher resolution versions of the images. All images are shown in spacecraft time (as opposed to Earth receive time). One way light time from Jupiter to Earth is currently 52 minutes. Images generated by Ron Baalke. The Galileo mission ended when the spacecraft impacted Jupiter on September 21, 2003 at 18:57 UTC. Galileo's last signal arrived at Earth at 19:43 UTC. Galileo has been in orbit around Jupiter since December 1995. Galileo Jupiter Impact Animations Overhead View of Jupiter The orbits of the four Galilean satellites are also shown (fro Read More Go to Site Galileo Images and Animations Votes:0 [ Main | News | Countdown | Search | FAQ | Glossary ] Galileo Images and Animations Galileo Images The release of Galileo images during the extended mission The full data sets from the first 15 orbits are available. Europa Images Europa Clickable Map Regional Mosaic-Europa Chaos, Gray Band (November 1997) High-Resolution Europa Mosaic-Ridges, Plains, Mountains (November 1997) Europa Ice Rafting View (December 1997) Europa Images From Orbit 1 (June 1996). Europa Images From Orbit 2 (September 1996). Europa Images From Orbit 3 (November 1996). Europa Images From Orbit 4 (December 1996). Europa Images From Orbit 6 (February 1997). Europa Images From Orbit 7 (April 1997). Callisto 9 Encounter (June 1997) Europa Images From Orbit 11 (November 1997). Europa Images From Orbit 12 (December 1997). Read More Go to Site Galileo Project Home Votes:0 Galileo End of Mission Status The Galileo spacecraft's 14-year odyssey came to an end on Sunday, Sept. 21, when the spacecraft passed into Jupiter's shadow then disintegrated in the planet's dense atmosphere at 11:57 a.m. Pacific Daylight Time. The Deep Space Network tracking station in Goldstone, Calif., received the last signal at 12:43:14 PDT. The delay is due to the time it takes for the signal to travel to Earth. Full Release Legacy of Galileo Animation: RealPlayer or Quicktime End of Mission Webcast Information For our Solar System Ambassadors: Galileo Mission Legacy Powerpoint End of Mission Press Kit (PDF - 202 KB) Galileo Mission to Jupiter Fact Sheet (PDF - 1.32 MB) Galileo's Top Ten Science Images 'Sounds' of Jupiter Galileo End of Mission Coloring Book Spotlight: Surprising Jup Read More Go to Site Galileo Project Home - Welcome Page Votes:0 After a six year journey from Earth, the Galileo Probe and Orbiter arrived at Jupiter on December 7, 1995. The Galileo Probe returned the first ever direct measurements of an outer planet's atmosphere, and the Orbiter continues to tour the Jupiter System. After the successful completion of Galileo's two year main mission, we are now completing its extended phase -- the Galileo Europa Mission (GEM) . GEM has allowed us to spend two more years investigating Jupiter, focusing on its icy moon Europa, its atmosphere's dramatic thunderstorms, and soon the fiery volcanoes of its moon Io. Many years of effort have now resulted in information which is adding to our understanding of the Jupiter system and our solar system. Since Galileo's tour of the Jupiter system began, we have learned a great dea Read More Go to Site Jupiter Votes:0 ???Jupiter is the largest planet in the solar system. When approached from afar, its fantastic striped atmosphere gradually reveals intriguing clouds that move around the planet. Rich in historical and cultural connections, Jupiter is the site of recent comet impacts and continuing scientific discovery. ? Interior & Surface Atmosphere Magnetosphere Moons & Rings Planetary Facts Myth & Culture Space Missions Discover Jupiter Latest News from Jupiter Image Archives Jupiter's Web Last modified May 27, 2004 by Randy Russell. The source of this material is Windows to the Universe , at http://www.windows.ucar.edu/ at the University Corporation for Atmospheric Research (UCAR). ©1995-1999, 2000 The Regents of the University of Michigan; ©2000-06 University Corporation for Atmospheric Research. All Read More Go to Site Jupiter Votes:0 Jupiter The Bringer of Jollity Jupiter is the fifth planet from the Sun and by far the largest. Jupiter is more than twice as massive as all the other planets combined (the mass of Jupiter is 318 times that of Earth). orbit : 778,330,000 km (5.20 AU ) from Sun diameter : 142,984 km (equatorial) mass : 1.900e27 kg Hardcopy The New Solar System Summarizes what we've learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . The Moons of Jupiter 106 images of the Galilean moons from Galileo with unusual descriptive text. Symphony No. 41 in C Major K. 551 ("Jupiter") by W. A. Mozart; I am not sure what it has to do with the planet but it is one of Mozart's best. And that is saying a lot! Jupiter (a.k.a. Jove; Greek Zeus ) was the King of the Gods Read More Go to Site Jupiter Fact Sheet Votes:0 Jupiter Fact Sheet Jupiter/Earth Comparison Bulk parameters Jupiter Earth Ratio (Jupiter/Earth)Mass (10 24 kg) 1,898.6 5.9736 317.83 Volume (10 10 km 3 ) 143,128 108.321 1321.33Radius (1 bar level) (km) Equatorial 71,492 6,378.1 11.209 Polar 66,854 6,356.8 10.517Volumetric mean radius (km) 69,911 6,371.0 10.973Ellipticity 0.06487 0.00335 19.36 Mean density (kg/m 3 ) 1,326 5,515 0.240 Gravity (eq., 1 bar) (m/s 2 ) 24.79 9.80 2.530 Acceleration (eq., 1 bar) (m/s 2 ) 23.12 9.78 2.364 Escape velocity (km/s) 59.5 11.19 5.32GM (x 10 6 km 3 /s 2 ) 126.686 0.3986 317.8 Bond albedo 0.343 0.306 1.12Visual geometric albedo 0.52 0.367 1.42 Visual magnitude V(1,0) -9.40 -3.86 -Solar irradiance (W/m 2 ) 50.50 1367.6 0.037Black-body temperature (K) 110.0 254.3 0.433Moment of inertia (I/MR 2 ) 0. Read More Go to Site Magellan Mission to Venus (JPL) Votes:0 Magellan Mission to Venus This site is no longer active. While the information was correct at the time of publishing, it cannot be assumed that it is still correct. Please enjoy the site as a glimpse back at history. Welcome to the Magellan Project home page! NASA's Magellan spacecraft made a dramatic conclusion to its highly successful mission at Venus when it is commanded to plunge into the planet's dense atmosphere Tuesday, October 11, 1994. During its four years in orbit around Earth's sister planet, the spacecraft has radar-mapped 98 percent of the surface and collected high-resolution gravity data of Venus. The purpose of the crash landing is to gain data on the planet's atmosphere and on the performance of the spacecraft as it descends. This home page offers Venus images taken by Ma Read More Go to Site Mars Votes:0 Mars The Bringer of War Mars is the fourth planet from the Sun and the seventh largest: orbit : 227,940,000 km (1.52 AU ) from Sun diameter : 6,794 km mass : 6.4219e23 kg Hardcopy The Case for Mars by Robert Zubrin. A realistic proposal for sending men to Mars cheaply. The ideas in this book are being taken seriously by NASA. There is hope! Encyclopedia of the Solar System A more scholarly introduction the planetary science for those who want to dig a little deeper. A Travelers Guide to Mars Accessible, heavily illustrated, presenting much of the astonishing information recently learned about Mars, written in a engaging, lively style. Mars Underground Fiction by a scientist who knows both how to tell a good story and the territory it is set in. Mars (Greek: Ares ) is the god of War. The pl Read More Go to Site Mercury Votes:0 Mercury, the planet nearest the Sun, is the second smallest planet in the solar system. Only slightly larger than the Earth's moon, Mercury's surface is covered with craters. This tiny planet does not have any rings or moons. Interior & Surface Atmosphere Magnetosphere Planetary Facts Myth & Culture Discover Mercury Latest News From Mercury Space Missions Image Archives Mercury's Web Last modified October 5, 2007 by Randy Russell. The source of this material is Windows to the Universe , at http://www.windows.ucar.edu/ at the University Corporation for Atmospheric Research (UCAR). ?1995-1999, 2000 The Regents of the University of Michigan; ?2000-06 University Corporation for Atmospheric Research. All Rights Reserved. Site policies and disclaimer Read More Go to Site Mercury Votes:0 Mercury The Winged Messenger Mercury is the closest planet to the Sun and the eighth largest. Mercury is slightly smaller in diameter than the moons Ganymede and Titan but more than twice as massive. orbit : 57,910,000 km (0.38 AU ) from Sun diameter : 4,880 km mass : 3.30e23 kg Hardcopy The New Solar System Summarizes what we've learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . In Search of Planet Vulcan An account of the non-discovery of a planet interior to Mercury. A much more interesting tale than you might imagine. In Roman mythology Mercury is the god of commerce, travel and thievery, the Roman counterpart of the Greek god Hermes , the messenger of the Gods. The planet probably received this name because it moves so quickly ac Read More Go to Site Mercury Fact Sheet Votes:0 Mercury Fact Sheet Mercury/Earth Comparison Bulk parameters Mercury Earth Ratio (Mercury/Earth)Mass (10 24 kg) 0.3302 5.9736 0.0553 Volume (10 10 km 3 ) 6.083 108.321 0.0562 Equatorial radius (km) 2439.7 6378.1 0.383 Polar radius (km) 2439.7 6356.8 0.384 Volumetric mean radius (km) 2439.7 6371.0 0.383Ellipticity (Flattening) 0.0000 0.00335 0.000 Mean density (kg/m 3 ) 5427 5515 0.984 Surface gravity (eq.) (m/s 2 ) 3.70 9.80 0.378 Surface acceleration (eq.) (m/s 2 ) 3.70 9.78 0.378 Escape velocity (km/s) 4.3 11.2 0.384 GM (x 10 6 km 3 /s 2 ) 0.02203 0.3986 0.0553 Bond albedo 0.119 0.306 0.389Visual geometric albedo 0.106 0.367 0.289 Visual magnitude V(1,0) -0.42 -3.86 - Solar irradiance (W/m 2 ) 9126.6 1367.6 6.673 Black-body temperature (K) 442.5 254.3 1.740Moment of inertia (I/MR 2 ) Read More Go to Site NASA Polar, Wind, and Geotail Projects Votes:0 From the Sun to the Earth: Polar, Wind and Geotail Polar, Wind, and Geotail are fundamental elements in NASA's global approach to understanding the Sun-Earth Connections system. Operating as a distributed laboratory in space, events are routinely followed from their birth on the Sun, traced through the interplanetary medium, and then studied in terms of their effectiveness in creating geomagnetic storms and substorms in our near Earth environment. The focus is on understanding the dynamics -- short- and long-term, large and small, through active and quiet solar periods. &nbsp Polar &nbsp&nbsp | &nbsp&nbsp Wind &nbsp&nbsp | &nbsp&nbsp Geotail OVERVIEW ORBITS FTP TO THE DATA ISTP ARCHIVE What is the Sun-Earth Connection? Education and Public Outreach InformaciÓn en EspaÑol &nbsp Meetings/Wor Read More Go to Site Neptune Votes:0 Neptune The Mystic Neptune is the eighth planet from the Sun and the fourth largest (by diameter). Neptune is smaller in diameter but larger in mass than Uranus . orbit : 4,504,000,000 km (30.06 AU ) from Sun diameter : 49,532 km (equatorial) mass : 1.0247e26 kg Hardcopy The New Solar System Summarizes what we have learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . Encyclopedia of the Solar System A more scholarly introduction the planetary science for those who want to dig a little deeper. The Compact NASA Atlas of the Solar System This road map of the solar system contains lots of maps and data as well as photos. In Roman mythology Neptune (Greek: Poseidon ) was the god of the Sea. After the discovery of Uranus, it was noticed that Read More Go to Site Neptune Votes:0 ???Neptune, which is usually the eighth planet from the Sun, is a very cold place. Occasionally, the ninth planet Pluto crosses Neptune's orbit and becomes the "eighth planet". Its bluish color comes from its atmosphere of methane gas. The planet has moons and a very narrow, faint ring system. Interior & Surface Atmosphere Magnetosphere Moons & Rings Planetary Facts Myth & Culture Space Missions Discover Neptune Latest News from Neptune Image Archives Neptune's Web Last modified October 28, 2003 by Randy Russell. The source of this material is Windows to the Universe , at http://www.windows.ucar.edu/ at the University Corporation for Atmospheric Research (UCAR). ©1995-1999, 2000 The Regents of the University of Michigan; ©2000-06 University Corporation for Atmospheric Research. All Rights Read More Go to Site Neptune Votes:0 Neptune The Mystic Neptune is the eighth planet from the Sun and the fourth largest (by diameter). Neptune is smaller in diameter but larger in mass than Uranus . orbit : 4,504,000,000 km (30.06 AU ) from Sun diameter : 49,532 km (equatorial) mass : 1.0247e26 kg Hardcopy The New Solar System Summarizes what we have learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . Encyclopedia of the Solar System A more scholarly introduction the planetary science for those who want to dig a little deeper. The Compact NASA Atlas of the Solar System This road map of the solar system contains lots of maps and data as well as photos. In Roman mythology Neptune (Greek: Poseidon ) was the god of the Sea. After the discovery of Uranus, it was noticed that Read More Go to Site Neptune Fact Sheet Votes:0 Neptune Fact Sheet Neptune/Earth Comparison Bulk parameters Neptune Earth Ratio (Neptune/Earth)Mass (10 24 kg) 102.43 5.9736 17.147Volume (10 10 km 3 ) 6,254 108.321 57.74 Radius (1 bar level) (km) Equatorial 24,764 6,378.1 3.883 Polar 24,341 6,356.8 3.829Volumetric mean radius (km) 24,624 6,371.0 3.865Ellipticity (Flattening) 0.01708 0.00335 5.10Mean density (kg/m 3 ) 1,638 5,515 0.297Gravity (eq., 1 bar) (m/s 2 ) 11.15 9.80 1.14Acceleration (eq., 1 bar) (m/s 2 ) 11.00 9.78 1.12Escape velocity (km/s) 23.5 11.19 2.10GM (x 10 6 km 3 /s 2 ) 6.8351 0.3986 17.15 Bond albedo 0.290 0.306 0.95Visual geometric albedo 0.41 0.367 1.12Visual magnitude V(1,0) -6.87 -3.86 -Solar irradiance (W/m 2 ) 1.51 1,367.6 0.0011Black-body temperature (K) 46.6 254.3 0.183J 2 (x 10 -6 ) 3411. 1082.63 Read More Go to Site Planet Quest Votes:0 If your browser doesn't support frames, just go to the menu. Read More Go to Site Planetary Fact Sheets Votes:0 Planetary Fact Sheets Sun Fact Sheet Mercury Fact Sheet Venus Fact Sheet Earth Fact Sheet Moon Fact Sheet Near Earth Object Fact Sheet Mars Fact Sheet Asteroid Fact Sheet Jupiter Fact Sheet - Jovian Satellite Fact Sheet - Galilean Satellite Fact Table - Jovian Rings Fact Sheet Saturn Fact Sheet - Saturnian Satellite Fact Sheet - Saturnian Rings Fact Sheet Uranus Fact Sheet - Uranian Satellite Fact Sheet - Uranian Rings Fact Sheet Neptune Fact Sheet - Neptunian Satellite Fact Sheet - Neptunian Rings Fact Sheet Pluto Fact Sheet Comet Fact Sheet Chiron Fact Sheet Notes on the factsheets - definitions of parameters, units, notes on sub- and superscripts, etc. Table of Planetary Facts - Metric Units Table of Planetary Facts - U.S. Units Table of Planetary Facts - Earth Ratio NSSDC Planetary Hom Read More Go to Site Pluto Votes:0 Pluto Mathews: Pluto - The Renewer Hardcopy Pluto and Charon A history of what we've learned about Pluto from ground by Dr. Alan Stern, principal investigator on the New Horizons mission to Pluto. Encyclopedia of the Solar System A more scholarly introduction the planetary science for those who want to dig a little deeper. Pluto orbits beyond the orbit of Neptune (usually). It is much smaller than any of the official planets and now classified as a "dwarf planet". Pluto is smaller than seven of the solar system's moons (the Moon , Io , Europa , Ganymede , Callisto , Titan and Triton ). orbit : 5,913,520,000 km (39.5 AU ) from the Sun (average) diameter : 2274 km mass : 1.27e22 kg In Roman mythology, Pluto (Greek: Hades ) is the god of the underworld. The planet received this name (after ma Read More Go to Site Pluto Fact Sheet Votes:0 Pluto Fact Sheet Pluto/Earth Comparison Bulk parameters Pluto Earth Ratio (Pluto/Earth)Mass (10 24 kg) 0.0125 5.9736 0.0021Volume (10 10 km 3 ) 0.715 108.321 0.0066Equatorial radius (km) 1195 6378.1 0.187Polar radius (km) 1195 6356.8 0.188Volumetric mean radius (km) 1195 6371.0 0.188 Ellipticity (Flattening) 0.0000 0.00335 0.0Mean density (kg/m 3 ) 1750 5515 0.317Surface gravity (m/s 2 ) 0.58 9.80 0.059Surface acceleration (m/s 2 ) 0.58 9.78 0.059Escape velocity (km/s) 1.2 11.19 0.107GM (x 10 6 km 3 /s 2 ) 0.00083 0.3986 0.0021 Bond albedo 0.4 - 0.6 0.306 1.3 - 2.0Visual geometric albedo 0.5 - 0.7 0.367 1.4 - 1.9Visual magnitude V(1,0) -1.0 -3.86 -Solar irradiance (W/m 2 ) 0.89 1367.6 0.0007Black-body temperature (K) 37.5 254.3 0.147Number of natural satellites 3* 1Planetar Read More Go to Site Saturn Votes:0 Saturn The Bringer of Old Age Saturn is the sixth planet from the Sun and the second largest : orbit : 1,429,400,000 km (9.54 AU ) from Sun diameter : 120,536 km (equatorial) mass : 5.68e26 kg Hardcopy The New Solar System Summarizes what we have learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . Encyclopedia of the Solar System A more scholarly introduction the planetary science for those who want to dig a little deeper. The Compact NASA Atlas of the Solar System This road map of the solar system contains lots of maps and data as well as photos. In Roman mythology , Saturn is the god of agriculture. The associated Greek god, Cronus , was the son of Uranus and Gaia and the father of Zeus (Jupiter). Saturn is the root of the English wo Read More Go to Site Saturn Fact Sheet Votes:0 Saturn Fact Sheet Saturn/Earth Comparison Bulk parameters Saturn Earth Ratio (Saturn/Earth)Mass (10 24 kg) 568.46 5.9736 95.159 Volume (10 10 km 3 ) 82,713 108.321 763.59Radius (1 bar level) (km) Equatorial 60,268 6,378.1 9.449 Polar 54,364 6,356.8 8.552Volumetric mean radius (km) 58,232 6,371.0 9.140Ellipticity (Flattening) 0.09796 0.00335 29.24Mean density (kg/m 3 ) 687 5,515 0.125Gravity (eq., 1 bar) (m/s 2 ) 10.44 9.80 1.065 Acceleration (eq., 1 bar) (m/s 2 ) 8.96 9.78 0.916 Escape velocity (km/s) 35.5 11.19 3.172GM (x 10 6 km 3 /s 2 ) 37.931 0.3986 95.16Bond albedo 0.342 0.306 1.12Visual geometric albedo 0.47 0.367 1.28Visual magnitude V(1,0) -8.88 -3.86 -Solar irradiance (W/m 2 ) 14.90 1,367.6 0.011Black-body temperature (K) 81.1 254.3 0.319Moment of inertia (I/MR 2 ) 0. Read More Go to Site The Enterprise Mission Votes:0 "To Boldly Go Where Someone Has Gone Before....." « N O W H E A R T H I S » Hoagland's " Coast to Coast " Chat Transcript for Tuesday, March 16, 2004 Historical Articles and Papers on Mars Liquid water Original Press Release - 7/19/2000 Mars Tidal Model Paper Independent Analysis of Stain Distribution Pattern Confirms Key Aspect of Tidal Model of Mars Still More Confirmation of Mars Tidal Model When We're Right, We're Right ... You can Lead NASA to Water, but you can't make them think... The Curious Case of the NASA Crinoid Cover-Up By Richard C. Hoagland © 2004 The Enterprise Mission "It's hard to image why such bullet-proof evidence was denied for such a long time, and why those so vigorously denying it never did so by meeting the science, but merely by brushing it away. O Read More Go to Site The Jovian System Votes:0 [ Main | News | Countdown | Search | FAQ | Glossary ] The Jovian System Contents: Jupiter: King of Planets Missions of Discovery The Jovian Moons More Information This applet displays Jupiter and the four main satellites ( Io , Europa , Ganymede and Callisto ) in realtime as seen from Earth. The distances of the satellites from Jupiter are in proportion to that of the real Jovian system. The left-to-right order of the satellites are given by the satellite names displayed in the lower left box. Satellites names in red indicate that the satellite is being occulted (behind) by Jupiter. Satellite names in yellow represent transiting sate llites. Jupiter: King of Planets Jupiter, named after the king of the Roman Gods, reigns supreme among the nine planets of our solar system, rivaling the Sun Read More Go to Site The Nine Planets Solar System Tour Votes:0 A Multimedia Tour of the Solar System: one star, eight planets, and more by Bill Arnett Bill's site map Hardcopy The New Solar System Summarizes what we've learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . T. Rex and the Crater of Doom The story of the discovery of the impact crater that doomed the dinosaurs. Nice description of how science works in the real world. Encyclopedia of the Solar System A more scholarly introduction to planetary science for those who want to dig a little deeper. The Compact NASA Atlas of the Solar System This 'road map' of the solar system contains lots of maps and data as well as photos. Bad Astronomy The truth is out there; so is a lot of baloney. Here's the straight story on many popular urban legends, Read More Go to Site The Nine Planets Solar System Tour Votes:0 A Multimedia Tour of the Solar System: one star, eight planets, and more by Bill Arnett Bill's site map Hardcopy The New Solar System Summarizes what we've learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . T. Rex and the Crater of Doom The story of the discovery of the impact crater that doomed the dinosaurs. Nice description of how science works in the real world. Encyclopedia of the Solar System A more scholarly introduction to planetary science for those who want to dig a little deeper. The Compact NASA Atlas of the Solar System This 'road map' of the solar system contains lots of maps and data as well as photos. Bad Astronomy The truth is out there; so is a lot of baloney. Here's the straight story on many popular urban legends, Read More Go to Site The Nine Planets Solar System Tour Votes:0 A Multimedia Tour of the Solar System: one star, eight planets, and more by Bill Arnett Bill's site map Hardcopy The New Solar System Summarizes what we've learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . T. Rex and the Crater of Doom The story of the discovery of the impact crater that doomed the dinosaurs. Nice description of how science works in the real world. Encyclopedia of the Solar System A more scholarly introduction to planetary science for those who want to dig a little deeper. The Compact NASA Atlas of the Solar System This 'road map' of the solar system contains lots of maps and data as well as photos. Bad Astronomy The truth is out there; so is a lot of baloney. Here's the straight story on many popular urban legends, Read More Go to Site The Planetary Rings Node Votes:0 Rings Node Home Cassini News Cassini Mission (JPL) Press Release Images Data and Information Ringed Planets Jupiter Saturn Uranus Neptune Missions and Data Data Search . . . New Horizons Cassini Voyager Galileo Hubble Telescope Saturn RPX 1995 Uranus RPX 2007 Occultations Astrometry Downloads Data volumes Zip archives Previews/Thumbnails Resources Tools Toolkits Glossary Contacts Mark Showalter Mitch Gordon Neil Heather The Rings Node of NASA's Planetary Data System is devoted to archiving, cataloging, and distributing scientific data sets relevant to planetary ring systems. Search the Rings Node Search the Web Recent Highlights What's New on line. Search for Data! Try out our new multi-mission search engine , now in beta test. Comments welcome. ROSES Support A set of ROSES 2007 support pa Read More Go to Site Uranus Votes:0 Uranus The Magician Uranus is the seventh planet from the Sun and the third largest (by diameter). Uranus is larger in diameter but smaller in mass than Neptune . orbit : 2,870,990,000 km (19.218 AU ) from Sun diameter : 51,118 km (equatorial) mass : 8.683e25 kg Hardcopy The New Solar System Summarizes what we've learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . The Compact NASA Atlas of the Solar System This 'road map' of the solar system is the definitive guide for planetary science. The Tempest by William Shakespeare The R a pe of the Lock by Alexander Pope Careful pronunciation may be necessary to avoid embarrassment; say "YOOR a nus" , not "your anus" or "urine us". Uranus is the ancient Greek deity of the Heavens, the earliest Read More Go to Site Uranus Votes:0 Uranus The Magician Uranus is the seventh planet from the Sun and the third largest (by diameter). Uranus is larger in diameter but smaller in mass than Neptune . orbit : 2,870,990,000 km (19.218 AU ) from Sun diameter : 51,118 km (equatorial) mass : 8.683e25 kg Hardcopy The New Solar System Summarizes what we've learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . The Compact NASA Atlas of the Solar System This 'road map' of the solar system is the definitive guide for planetary science. The Tempest by William Shakespeare The R a pe of the Lock by Alexander Pope Careful pronunciation may be necessary to avoid embarrassment; say "YOOR a nus" , not "your anus" or "urine us". Uranus is the ancient Greek deity of the Heavens, the earliest Read More Go to Site Uranus Fact Sheet Votes:0 Uranus Fact Sheet Uranus/Earth Comparison Bulk parameters Uranus Earth Ratio (Uranus/Earth)Mass (10 24 kg) 86.832 5.9736 14.536Volume (10 10 km 3 ) 6,833 108.321 63.08Radius (1 bar level) (km) Equatorial 25,559 6,378.1 4.007 Polar 24,973 6,356.8 3.929Volumetric mean radius (km) 25,362 6,371.0 3.981Ellipticity (Flattening) 0.02293 0.00335 6.84Mean density (kg/m 3 ) 1,270 5,515 0.230Gravity (eq., 1 bar) (m/s 2 ) 8.87 9.80 0.905Acceleration (eq., 1 bar) (m/s 2 ) 8.69 9.78 0.889Escape velocity (km/s) 21.3 11.19 1.903GM (x 10 6 km 3 /s 2 ) 5.794 0.3986 14.536Bond albedo 0.300 0.306 0.980Visual geometric albedo 0.51 0.367 1.390Visual magnitude V(1,0) -7.19 -3.86 -Solar irradiance (W/m 2 ) 3.71 1,367.6 0.0027Black-body temperature (K) 58.2 254.3 0.229Moment of inertia (I/MR 2 ) 0. Read More Go to Site USGS Earthquake Hazards Program-Northern California Votes:0 skip navigational links Latest Quake Info General Quake Info Hazards & Preparedness Earthquake Research Special Features Additional Resources Search You are here: Quake Home Real Time Earthquake Maps California-Nevada (with fault names) USA World Real-time Shaking Maps For California earthquakes of Magnitude 3.5 and larger. See also: 1906 San Francisco Earthquake ShakeMaps . Real-time Forecast of Earthquake Hazard Maps showing the probability of strong shaking at any location in California within the next 24-hours. Earthquake Probabilities for the San Francisco Bay Area USGS and other scientists conclude that there is a 62% probability of at least one magnitude 6.7 or greater quake, capable of causing widespread damage, striking the San Francisco Bay region before 2032. 1906 Earthquake Cen Read More Go to Site Venus Votes:0 Venus The Bringer of Peace Venus is the second planet from the Sun and the sixth largest. Venus' orbit is the most nearly circular of that of any planet, with an eccentricity of less than 1%. orbit : 108,200,000 km (0.72 AU ) from Sun diameter : 12,103.6 km mass : 4.869e24 kg Hardcopy The New Solar System Summarizes what we havve learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . Venus Revealed The latest results from Magellan in an accessible and easygoing book. Covers mythology and history of our "sister planet" as well as up to date science and a history of the Magellan project. Venus in Transit Fascinating account of past transits and the woes that befell those involved. Venus (Greek: Aphrodite ; Babylonian: Ishtar) is the goddess Read More Go to Site Venus Votes:0 Venus The Bringer of Peace Venus is the second planet from the Sun and the sixth largest. Venus' orbit is the most nearly circular of that of any planet, with an eccentricity of less than 1%. orbit : 108,200,000 km (0.72 AU ) from Sun diameter : 12,103.6 km mass : 4.869e24 kg Hardcopy The New Solar System Summarizes what we havve learned from interplanetary explorations in the last 25 years. My primary reference for The Nine Planets . Venus Revealed The latest results from Magellan in an accessible and easygoing book. Covers mythology and history of our "sister planet" as well as up to date science and a history of the Magellan project. Venus in Transit Fascinating account of past transits and the woes that befell those involved. Venus (Greek: Aphrodite ; Babylonian: Ishtar) is the goddess Read More Go to Site Venus Fact Sheet Votes:0 Venus Fact Sheet Venus/Earth Comparison Bulk parameters Venus Earth Ratio (Venus/Earth)Mass (10 24 kg) 4.8685 5.9736 0.815 Volume (10 10 km 3 ) 92.843 108.321 0.857Equatorial radius (km) 6051.8 6378.1 0.949 Polar radius (km) 6051.8 6356.8 0.952Volumetric mean radius (km) 6051.8 6371.0 0.950Ellipticity (Flattening) 0.000 0.00335 0.0 Mean density (kg/m 3 ) 5243 5515 0.951 Surface gravity (eq.) (m/s 2 ) 8.87 9.80 0.905 Surface acceleration (eq.) (m/s 2 ) 8.87 9.78 0.907 Escape velocity (km/s) 10.36 11.19 0.926GM (x 10 6 km 3 /s 2 ) 0.3249 0.3986 0.815Bond albedo 0.750 0.306 2.45Visual geometric albedo 0.65 0.367 1.77 Visual magnitude V(1,0) -4.40 -3.86 -Solar irradiance (W/m 2 ) 2613.9 1367.6 1.911Black-body temperature (K) 231.7 254.3 0.911 Topographic range (km) 15 20 0.750 Moment Read More Go to Site Welcome to the Planets Votes:0 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images. Please note: This collection replaces the former on-line version of Welcome to the Planets. Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly. When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options. Copyright 1995-2001, California Read More Go to Site Welcome to the Planets Votes:0 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images. Please note: This collection replaces the former on-line version of Welcome to the Planets. Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly. When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options. Copyright 1995-2001, California Read More Go to Site Welcome to the Planets Votes:0 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images. Please note: This collection replaces the former on-line version of Welcome to the Planets. Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly. When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options. Copyright 1995-2001, California Read More Go to Site Welcome to the Planets Votes:0 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images. Please note: This collection replaces the former on-line version of Welcome to the Planets. Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly. When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options. Copyright 1995-2001, California Read More Go to Site Welcome to the Planets Votes:0 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images. Please note: This collection replaces the former on-line version of Welcome to the Planets. Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly. When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options. Copyright 1995-2001, California Read More Go to Site Welcome to the Planets Votes:0 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images. Please note: This collection replaces the former on-line version of Welcome to the Planets. Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly. When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options. Copyright 1995-2001, California Read More Go to Site Welcome to the Planets Votes:0 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images. Please note: This collection replaces the former on-line version of Welcome to the Planets. Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly. When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options. Copyright 1995-2001, California Read More Go to Site Welcome to the Planets Votes:0 Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Small Bodies This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images. Please note: This collection replaces the former on-line version of Welcome to the Planets. Internal links within this site are not identical to the old site, so please adjust any links to this site accordingly. When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options. Responsible NASA Official: PDS E Read More Go to Site

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