The solar system that we're familiar with today arose from a solar nebula, a giant, rotating cloud of particles that encircled the young sun in its early days. These particles eventually formed Earth and the rest of its planetary peers. They also were the building blocks for planetoids and other cosmic bodies.
How old is the sun?
Answered by Meredith Bower and Science Channel
When does a new moon occur?
Answered by Science Channel
How do you find planets in a star's 'habitable zone'?
Answered by Dr. Gerard van Belle