When did the earth and solar system form?
The formation and evolution of the Solar System began 4.5 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. 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 formed.
When did the Solar System form?
4.5 billion years ago
Formation and evolution of the Solar System
No context provided
When did the Earth form?
4,540 mya
History of Earth
https://en.wikipedia.org/wiki/History%20of%20Earth
Formation and evolution of the Solar System
https://en.wikipedia.org/wiki/Formation%20and%20evolution%20of%20the%20Solar%20System
In geochronology, time is generally measured in mya (million years ago), each unit representing the period of approximately 1,000,000 years in the past.
History of Earth
The Solar System formed 4.5 billion years ago, its formation and evolution beginning with the gravitational collapse of a small part of a giant molecular cloud, while the Earth formed 4,540 mya, or 4,540 million years ago.