1. Minor Members Things that didn’t make up planets or moons.

2. Asteroids Rocky objects usually larger than a mile across. Most are found in the Asteroid Belt between Mars and Jupiter Earth has been hit by asteroids in the past.hit

3. Comets Are mostly made of ice. Orbit the sun. Their return can be predicted. Their tail shows the direction of the sun, not which way they are headed.

4. Meteoroids Small (less than 1 mile) rocks in space. When they enter a planets atmosphere they are meteors. When they strike the ground, they are meteorites.

5. We Have Been Hit The moon shows it’s record of impacts because it has no erosion.moon Earth shows only recent signs of impact.recent signs One major theory says that we were hit 65 MYA and this killed the dinosaurs.major theory

6. Iridium Iridium is very rare here on Earth but plentiful in asteroids. A layer of Iridium is found at the K-T boundary (65 MYA)K-T boundary

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9. Back to slide 5