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 …

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 …

Dec 17, 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 …

Dec 16, 2025 · Planet formation explained through how planets form in a protoplanetary disk, revealing the science behind solar system formation and planetary diversity.

Dec 7, 2025 · In the ancient world, theories of the origin of Earth and the objects seen in the sky were certainly much less constrained by fact. Indeed, a scientific approach to the origin of the …

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 formation and evolution of our solar system (and planetary systems around other stars) are among the most challenging and intriguing fields of modern science.

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 …

Apr 12, 2025 · Dive into solar system formation. Learn how the sun was made and how our planets were born from cosmic dust.

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! …