Sentences with phrase «create planetesimals»

These particles contracted under gravity to create planetesimals, which collided with one another to become the solid inner planets.

The second idea argues that swarms of centimeter - sized pebbles almost instantaneously collapsed under their collective weight to create planetesimals hundreds of kilometers across.

Not exact matches

In contrast to earlier observations the team did not observe dust that will later form into planets, but dust created in collisions between small planets of a few kilometres in size — objects called planetesimals that are similar to the asteroids and comets of the Solar System.

An image of the circumstellar dust disk around the young star HR4796A, which is thought to have been created by collisions between asteroids and planetesimals that were left over following the star's formation.