Question

Why do we think that the solar system formed from a rotating, collapsing gas cloud that ended up as a disk orbiting the Sun? a) Most of the planets revolve and rotate in the same direction, in the same plane b)Conservation of angular momentum means a collapsing cloud will spin faster and faster c)We see clouds of gas and dust in space d)We see disks around young stars e)All of the above

Answer 1

E) All of the above.

Step-by-step explanation:

The idea that the solar system formed from a rotating, collapsing gas cloud that ended up as a disk orbiting the Sun is supported by multiple lines of evidence. The fact that most of the planets revolve and rotate in the same direction, in the same plane, suggests that they formed from a flattened disk of material. Conservation of angular momentum means that a collapsing cloud will spin faster and faster, which is consistent with the observed rotation of the planets and the Sun. We also see clouds of gas and dust in space, and disks around young stars, which provides further evidence for this theory.