Astrobiology Glossary

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Term Definition
Ultraviolet (UV) Electromagnetic radiation with shorter wavelengths and higher energies and frequencies than visible light. UV light is lower in frequency than X-rays.
Universe The totality of space and time, along with all the matter and energy in it. Current theories assert that the universe is expanding and that all its matter and energy was created during the Big Bang.
Uranus The third largest planet in the solar system and the seventh from the Sun. Uranus is 19 times the Earth's distance from the Sun and completes a circuit around the Sun in about 84 Earth years. This gaseous, giant outer planet has a visible ring system and over 20 moons, the largest of which is Titania. Uranus is tipped on its side, with a rotation axis in nearly the same plane as its orbit.
Oct 11, 2008, 6:22 am
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Oct 11, 2008, 6:12 am
White House Issues Exercise Guidelines
Oct 11, 2008, 6:00 am
American Schools Full of Toxins
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Microwave Safety
Oct 11, 2008, 5:14 am
FDA Updates Cough Medicine Labels
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Marathons Wreak Havoc on the Knees

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Quote of the Day

A probability is a desperate attempt of chaos to become stable.
- unknown

Quiz Me

What was the name of the first cloned sheep?
A.Dolly
B.Twin
C.Christine
D.Brian
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Fact of the Day

Technology is not infallible. An estimated two million lab mistakes are made in the 100,000 laboratories in the U.S. every day.

Word of the Day

mercantile
Pronunciation: /MUR-kun-tile/
adj : of or characteristic of merchants or trade
"The mercantile needs of the United States are crucial to the health of the economy."