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The asteroid belt lies between the orbits of? |
Mars and Jupiter. |
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Jupiter nudges the asteroids through the influence of? |
Orbital resonances. |
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Can an asteroid belt be pure metal? |
Yes; it must have been the core of a shattered asteroid. |
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Did large terrestrial planet ever form in the region of the asteroid belt? |
No, because Jupiter prevented one from accreting. |
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What does Pluto most resemble? |
A comet. |
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How big an object causes a typical shooting star? |
A grain of sand or small pebble. |
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Which have the most elliptical and tilted orbits? |
Oort cloud comets. |
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Which are thought to have formed farthest from the Sun? |
Kuiper belt comets. |
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About how often does a 1-kilometer object strike Earth? |
Every million years. |
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What would happen if a 1-kilometer object struck Earth? |
It would cause widespread devastation and climate change. |
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