Question

How did the sun and planets form?

1) The sun and planets formed from the condensation and accretion of a cloud of gas and dust.
2) The sun formed first, followed by the condensation and accretion of planets within the nebular disk.
3) The sun and planets formed simultaneously from the condensation and accretion of a cloud of gas and dust.
4) The sun and planets formed through a process of fusion within the nebular disk.

Answer 1

The sun and planets formed from the condensation and accretion of a cloud of gas and dust called the solar nebula. This cloud collapsed under its own gravity, causing it to flatten into a disk. The central part of the disk became the Sun, while the solid particles in the cooler outer regions of the disk condensed to form planetesimals, which eventually became the building blocks of the planets and moons.

Step-by-step explanation:

The sun and planets formed from the condensation and accretion of a cloud of gas and dust called the solar nebula. This cloud collapsed under its own gravity, causing it to flatten into a disk.

The central part of the disk became the Sun, while the solid particles in the cooler outer regions of the disk condensed to form planetesimals, which eventually became the building blocks of the planets and moons.