Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies …

The solar system as we know it began life as a vast, swirling cloud of gas and dust, twisting through the universe without direction or form. About 4.6 billion years ago, this gigantic cloud was transformed …

Dec 7, 2025 · Solar system - Origin, Planets, Formation: As the amount of data on the planets, moons, comets, and asteroids has grown, so too have the problems faced by astronomers in forming …

Dec 9, 2025 · The Solar system formed through condensation from big clouds of gas and dust called nebulae after a supernova, or the explosion of a large star. Planets move around the Sun in an orbit, …

This illustration shows the steps in the formation of the solar system from the solar nebula. As the nebula shrinks, its rotation causes it to flatten into a disk.

Aug 24, 2025 · The formation of the Solar System is believed to have begun about 4.6 billion years ago from a giant cloud of gas and dust known as the solar nebula. This cloud collapsed under its own …

Discover the formation of our solar system and its role in making Earth a habitable place for life.

Jul 28, 2025 · The Formation of the Solar System While the Sun’s core burned brighter, the surrounding disk of gas and dust underwent its own transformation. Tiny dust grains collided and stuck together, …

A new theory for the origin of the Solar System explains the meteorite record by forming planets in two steps.

What properties of our solar system must a formation theory explain? The planets formed from debris torn off the Sun by a close encounter with another star. These hypotheses don’t work! The nebular …