Skip Navigation
FREE: Federal Resources for Educational Excellence - Teaching and Learning Resources From Federal Agencies

Subject Map
Applied Sciences
Computers/Tech (16)
Engineering (26)
Earth Sciences
Climate Change (42)
Environment (64)
Geology (37)
Oceans (42)
Other Earth Sciences (76)
Life Sciences
Animals/Zoology (35)
Botany (19)
Cells (26)
Diseases (35)
Genes, Evolution (43)
Human Body (31)
Interdependence (25)
Medicine (28)
Other Life Sciences (45)
Physical Sciences
Chemistry (37)
Energy (25)
Physics (46)
Other Physical Sciences (23)
Space Sciences
Aeronautics (27)
Astronomy (60)
Other Space Sciences (31)
Other Science (45)
What's New

Science » Space Sciences » Astronomy

Alien Earths

explores the formation of stars and planets and the quest for a habitable planet. Create a virtual a community of microorganisms. Try to build the perfect solar system. See how planets react with one another, and how some planets help keep our solar system stable. Look at images: see if you can recognize life. (Space Science Institute, Multiple Agencies)

   Go to this website

Interesting Fact:

Our solar system has four inner rocky worlds, four gaseous outer worlds, plus icy Pluto. All are in the same orbital plane, except Pluto. Pluto's small size and odd characteristics lead some astronomers to believe that it's not a planet but a comet-like object captured from the outer solar system.
Link to a slideshow of Lifestyles of the Stars

Lifestyles of the stars

    About FREE      Privacy     Security     Disclaimer