What astrophysical structure often forms during the birth of a star and later becomes planets?

Answer

A protoplanetary disk

As gas and dust collapse to form a star, the remaining material frequently settles into a rotating structure known as a protoplanetary disk. Over time, the material within this disk coalesces to form planets, making the creation of planetary systems a standard byproduct of the star formation process.

What astrophysical structure often forms during the birth of a star and later becomes planets?
Andromedagalaxyplanet