4.6 billion years ago.
The planets of our solar system were formed at different times, the earth is known to have formed as a planet about 4.6 billion years ago but other planets in the solar system may have formed earlier or later as they were quite conceivably not formed in the same manner as the earth
We do not have a system of dates for other planets. The only system we have is that of Earth.
When the sun was being born, matter that was circling around it formed into planets. There was hundreds of planets, but most of them were destroyed when they crashed into each other. Eventually, only the main 8 planets were left. Then water came on earth from comets.(scientists think so anyway) and life was formed
They believe the planets formed from a disc of gas and dust called a "protoplanetary disc".
We believe that our solar system, including the Sun, Earth and all the other planets, formed about 4.5 billion years ago
The other planets, stars, galaxies, meteors, comets, and asteroids.
Other planets other than earth is put in the solar system for humans to explore and do researches on them.
The Sun, Earth and other planets, along with many other items are part of a Solar System.
Scientists believe that the Earth and other planets in our solar system formed about 4.6 billion years ago from a disk of dust and gas surrounding the young sun. This process, known as accretion, involved the gradual gathering of particles to form the planets.
It is estimated that the Solar System is 4.6 billion years old including Earth and the other planets.
They were made of dust, not rock
Yes. Besides earth there are seven other major planets and 5 recognised dwarf planets.