The Asteroid Belt
Presented by Greg Aloi and Jacob Darby
WHAT ARE THEY?
- Means "star - like".
- Rocky, metallic objects that orbit sun....too small to be planets.
- Range in size.
- Are found inside Earth's orbit and beyond Saturn's orbit.
- Mostly concentrated between Mars and Jupiter
- First asteroid discovered in 1801. Thought to be the "missing planet".
- Left over material.
- Never able to form a planet because of interference from
- Originally travelled slowly.
- Now move much faster allowing only collisions.
What they consist of
- Classified by their color.
- C-Type (Carbonaceous)
- S-Type (Silicaceous)
- Made up mostly of silicate rock, iron, and nickel.
- Do contain a variety of other metals and minerals (i.e gold).
- Also believed to have water.
HOW TO STUDY THEM
- Most understanding comes from meteroids that fall to the Earth.
- Earth-based radar observations.
- Hubble telescope.
- Gallileo probe.
WHAT'S THE POINT?
- Need to "live off the land".
- Asteroids rich in metals, minerals, and water.
- No significnt gravity.
- Many can be reached as easily as the moon.