1. Why does a nebula spin faster as it contracts? 2. According to the nebular theory, did the planets start forming before or after the Sun ignited? 3. What happens to the amount of the Sun’s mass as...

1. Why does a nebula spin faster as it contracts?

2. According to the nebular theory, did the planets start forming before or after the Sun ignited?

3. What happens to the amount of the Sun’s mass as it “burns”?