Formation and evolution of the Solar System - Wikipedia
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 …
How our solar system was born - Natural History Museum
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 …
1.2. How did our Solar System form? - NASA Astrobiology
Feb 13, 2026 · 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, …
Solar system - Origin, Planets, Formation | Britannica
5 days ago · The current approach to the origin of the solar system treats it as part of the general process of star formation. As observational information has steadily increased, the field of plausible …
How Planets Form: Planet Formation and Protoplanetary Disks in Solar ...
Dec 16, 2025 · Planet formation is a complex process driven by gravity, motion, and time within a protoplanetary disk. From microscopic dust grains to fully formed planets, solar system formation …
4.1: Solar System Formation - Physics LibreTexts
The solar nebula model describes formation of the solar system and describes the main features that we observe: the rocky planets orbit more closely to the Sun and gas giants formed and orbit beyond the …
14.3 Formation of the Solar System – Astronomy
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 …
Solar System Formation – Astrobiology
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 …
READ: How Our Solar System Formed (article) | Khan Academy
The Solar System that we live in consists of a medium-size star (the Sun) with eight planets orbiting it. The planets are of two different types. The four inner planets, those closest to the Sun, are Mercury, …
Astronomy Lecture Notes - Solar System Formation
Starting point: A cloud of interstellar gas and dust, the "solar nebula"; Most of it (98%) is hydrogen and helium, but it includes atoms and dust grains of heavier material, formed in previous generations of …