The Trojan asteroids have orbits that:
A) are, on average, closer to the Sun than we are.
B) cross the orbit of Earth at perihelion.
C) cross the orbit of Mars, but not Earth, at perihelion.
D) stay sixty degrees ahead of or behind Jupiter.
E) stay out beyond Neptune.
Question 2
How long does it take an M class star to reach the main sequence, compared to a solar type star?
A) a tenth as long
B) about the same, 30 million years
C) about twice as long
D) about twenty times longer
E) longer than the age of the Galaxy
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