Formation of the Planets

The Solar Nebula and Protostar Formation00:00:02

The solar system began as a cold, spinning cloud of gas called the solar nebula. Gravity condensed this gas, creating an accretion disk and a hot protostar at the center, which eventually ignited to become the Sun.

Formation of Protoplanets00:01:36

Matter outside the Sun clumped together to form protoplanets, which grew by capturing material through their gravitational fields. This explains why planets orbit in the same direction and on the same plane.

Arrangement of Planets00:02:02

Solar winds pushed lighter gases outward, resulting in rocky terrestrial planets forming near the Sun and gas giants forming in the cooler, outer regions of the solar system.

Evolution and Conclusion00:02:35

The solar system continued to evolve through asteroid impacts and planetary cooling. While the nebular hypothesis cannot be directly tested, it successfully explains the structure and movement of our solar system.