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Earth

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		Earth ^Votes:0 Earth, our home planet, is a beautiful blue and white ball when seen from space. The third planet from the Sun, it is the largest of the inner planets. Earth is the only planet known to support life and to have liquid water at the surface. Interior and Surface Atmosphere MILAGRO Campaign Magnetosphere Moon Earth's Polar Regions Climate and Global Change Water ( The Hydrosphere! ) Life and Ecology ( The Biosphere! ) Geology ( The Geosphere! ) Planetary Facts Clouds in Art Myth & Culture Space Missions Earth News Image Archives Earth's Web Last modified October 15, 2007 by Lisa Gardiner. 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 Michi Read More Go to Site


		Earth Fact Sheet ^Votes:0 Earth Fact Sheet Bulk parameters Mass (10 24 kg) 5.9736Volume (10 10 km 3 ) 108.321 Equatorial radius (km) 6378.1 Polar radius (km) 6356.8 Volumetric mean radius (km) 6371.0Core radius (km) 3485Ellipticity (Flattening) 0.00335 Mean density (kg/m 3 ) 5515 Surface gravity (m/s 2 ) 9.798 Surface acceleration (m/s 2 ) 9.780 Escape velocity (km/s) 11.186GM (x 10 6 km 3 /s 2 ) 0.3986 Bond albedo 0.306 Visual geometric albedo 0.367Visual magnitude V(1,0) -3.86Solar irradiance (W/m 2 ) 1367.6 Black-body temperature (K) 254.3 Topographic range (km) 20Moment of inertia (I/MR 2 ) 0.3308J 2 (x 10 -6 ) 1082.63 Number of natural satellites 1 Planetary ring system No Orbital parameters Semimajor axis (10 6 km) 149.60 Sidereal orbit period (days) 365.256Tropical orbit period (days) 365.242 Perihe Read More Go to Site

		science@nasa - NASA's Science Mission Directorate ^Votes:0 + Site Map + Common Questions Site Search: Current Stories \| Email Updates \| Media Contacts Swimming a Salty Sea If there is life on Jupiter's moon Europa, what would it be like? The answer partly depends on the type of ocean water that is under the moon's icy outer shell. [+ more] Bounce House on the Moon [+ more] Forests Damaged by Hurricane Katrina Become Major Carbon Source [+ more] Hubble Zooms in on Heart of Mystery Comet [+ more] Recycling a Solar Satellite [+ more] Local Sources Major Cause of U.S. Near-Ground Aerosol Pollution [+ more] Pleiades Planets [+ more] Moon Rocket Parachute Tests a Success [+ more] Science Strategy + Current Strategy Documents + Community Input + Past Strategy Documents + NASA Communication Policy Missions + Earth + Sun + Solar System + Universe + All Mis Read More Go to Site

		The Exploration of the Earth's Magnetosphere" ^Votes:0 The Exploration of the Earth's Magnetosphere Illustration by Steele Hill An educational web site by David P. Stern and Mauricio Peredo . Your comments and suggestions may be sent to Dr. David P. Stern at education ("at" symbol) phy6.org . Unless overloaded, I will try to reply. If your question concerns any file here, please name it! Many more related websites: http://www.phy6.org/prospect.htm Recent addition: Welcome to my World , a diverse collection of writings. "zipped" compressed version of this set (9 Mb) http://www.phy6.org/Education.zip . Open here the home page of a Spanish translation "La ExploraciÓn de la Magnetosfera Terrestre" , by J. MÉndez of Algorta, Spain. Open here the home page of a French translation L'Exploration de la MagnÉtosphÈre Terrestre , by Kamil Fadel a Read More Go to Site

		The Gateway to Astronaut Photography of Earth ^Votes:0 skip menus Find Photos Collections Information IPY 2007 Mission-Roll-Frame Search Technical Search Clickable Map Search Uncataloged ESC Nadir Data Search About the Photos Order Photos Conditions for Use of Images Frequently Asked Questions Image Quiz Earth Observatory Mission Highlights Collection Earth From Space Collection Cities Collection IPY Images Weekly Top 10 Images Earths Systems from Space How to Find Mt. Everest from Space Canyons, Craters & Drifting Dunes Screensavers About Us Factsheet Contact Us Subscribe Verify Subscription Password Remind Unsubscribe Website Awards User Comments Server Statistics Image Transformation Tutorial Color Enhancement Techniques Time to Position Calculator Position to Time Calculator Saving, Adjusting & Printing Space Station Window ISS Orbit Tutor Read More Go to Site

		Welcome To Chelmsford.com ^Votes:0 Chelmsford.com Visit Chelmsford CHELMSFORD \| CHELMSFORD MASSACHUSETTS \| HOTELS \| REAL ESTATE \| APARTMENTS \| CHELMSFORD ENGLAND \| EMPLOYMENT \| YELLOW PAGES \| WHITE PAGES CHELMSFORD CHELMSFORD MASSACHUSETTS CHELMSFORD HOTELS CHELMSFORD REAL ESTATE CHELMSFORD APARTMENTS CHELMSFORD ENGLAND EMPLOYMENT YELLOW PAGES WHITE PAGES Seeking information on Chelmsford? Look through our comprehensive, search-friendly index. CHELMSFORD \| CHELMSFORD MASSACHUSETTS \| HOTELS \| REAL ESTATE \| APARTMENTS \| CHELMSFORD ENGLAND \| EMPLOYMENT \| YELLOW PAGES \| WHITE PAGES List your site 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

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