http://www.spaceweather.com/
Science news and information about the Sun-Earth environment

http://www.unb.ca/passc/ImpactDatabase/
Data on 169 earthly craters

http://adswww.harvard.edu/
Over 1.5 million astronomy and physics references can be searched at the Astrophysics Data System, a free bibliographic database on the Internet

http://astrogeology.usgs.gov
General information and a database for specific planets and moons

http://earthobservatory.nasa.gov
NASA's Earth Observatory. Statistics on everything from sea temperature to clouds fire and vegetation

http://www.aao.gov.au
The Anglo-Australian Observatory has a Stellar Gallery

http://www.astrobiology.com
How did life get started on Earth?  This and many other questions explored within links at NASA's astrobiology home page

http://sohowww.nascom.nasa.gov/gallery/bestofsoho
Dozens of stunning images taken with an ultraviolet telescope about the Solar and Heliospheric Observatory (SOHO)

http://www.astrosociety.org/education/activities/astroacts.html
Pacific astronomers culled the best of the astronomy education sites to compile this annotated list of activities for K-12 students.

http://etacha.as.arizona.edu/~eem/exo.html
Astronomer's research focused on planets outside our solar system.

http://gcmd.gsfc.nasa.gov/
Global Change Master Directory from NASA

http://impact.arc.nasa.gov
List of asteroids and space junk that could hit the earth

http://neo.jpl.nasa.gov
NASA's JPL  Near-Earth Object Program

http://seds.lpl.arizona.edu/nineplanets/nineplanets/meteorites.htm
Meteors, meteorites, and impacts. Report a meteor

http://topex.ucsd.edu/marine_topo/globe.html
Digital Globe: Fly Over the Global Spreading Ridges, Fly Along the Antarctic Circumpolar Current, etc.

http://www.auburn.edu/academic/science_math/geology/docs/wetumpka/specific.htm
If Wetumpka structure is an impact crater,
how big was the meteorite?

http://www.nationalgeographic.com/solarsystem
The virtual solar system. Hopscotch from planet to planet
as celestial bodies spin around you

http://www.seds.org/billa/tnp
Built as a multimedia tour of the Solar System, this site offers 90 pages of information about Earth, it's planetary kin, and their satellites.

http://www.si.edu/
Smithsonian Institution Home Page

http://www.sciencenetlinks.com/interactives/messenger/pcs/PlanetSize.html
Find a clear demonstration about the relative size of the planets.

http://pdsmaps.wr.usgs.gov/
Customize and download your own image maps of the Moon, Mars, Venus, and other planets and moons.

http://www.geology.com/meteor-impact-craters.shtml
Meteor Impact Craters

http://meteorite.com/meteor_crater/m_c_hike.htm
Meteor Crater in Arizona, USA

http://www.lpl.arizona.edu/impacteffects
Earth Impact Effects Program: an easy-to-use, interactive web site for estimating the regional environmental consequences of an impact on Earth

 

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