Category:Science

Astronomy

Asteroids, Meteors, and Comets

• Asteroid Fast Facts
• Asteroid impact avoidance on Wikipedia
• Bolide: an extremely bright meteor, especially one that explodes in the atmosphere
• Comet
• How big does a meteor have to be to make it to the ground? Hint: Anywhere from dust on up
• How fast is a comet search results on Google
• Incoming! Meteor or Comet Fragment Explodes Above Southwestern US, Prompting US Army 'Missiles' Cover-up
• Meteor Smoke Makes Strange Clouds
• We Probably Wouldn't Even See A Doomsday Asteroid Until It Was Too Late
• The Willamette Meteorite

Space Travel

• How to land the Space Shuttle

Biology

Animals

• Category: Animals

Human

• Category: Aging
• Category: Medicine

Vision

• How far can we see if unobstructed? Hint: usually 12 miles.

Earth Science

• The Atmosphere of the Earth on Wikipedia

Geology

Caves and Caving

• Avoiding caving accidents

Impact Craters

• The Chesapeake Bay impact crater and the related boundary image
• Impact Craters Google Image Search
• Understanding the Impact Cratering Process: a Simple Approach

Rocks

• Breccia: a rock composed of broken fragments of minerals or rock cemented together by a fine-grained matrix[1] that can be similar to or different from the composition of the fragments. May be formed by an impact.
• Ringing Rocks of Montgomery County, Pennsylvania (PDF)
• Granite: a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Used for countertops, among other things. Popular in Minecraft.
• Virginia Minerals (PDF)

Physics

Thermodynamics

• Phlogiston theory