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 …

Jan 3, 2026 · 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 …

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 …

Mar 12, 2025 · Our solar system includes the Sun, eight planets, five dwarf planets, and hundreds of moons, asteroids, and comets.

As we have seen, the comets, asteroids, and meteorites are surviving remnants from the processes that formed the solar system. The planets, moons, and the Sun, of course, also are the products of the …

4 days ago · The Nebular Theory is the leading scientific explanation for the formation of our solar system approximately 4.6 billion years ago. This widely accepted model posits that the Sun, planets, …

Dec 8, 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 …

Nebular Theory The nebular theory states that our solar system formed from the gravitational collapse of a giant interstellar gas cloud—the solar nebula. (Nebula is the Latin word for cloud.) Kant and …

Nebular hypothesis ... The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary …

All of the main building blocks for life -- carbon, hydrogen, oxygen and nitrogen (CHONs) -- were present in the cloud that collapsed to form our solar system. Ultimately, this concentration of gas and dust …