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They were made of dust, not rock

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11y ago

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. Scientists believe that Earth and the other planets formed _____.?

They believe the planets formed from a disc of gas and dust called a "protoplanetary disc".


What else was formed when the earth was formed?

The other planets, stars, galaxies, meteors, comets, and asteroids.


How long ago was the first form of earth?

We believe that our solar system, including the Sun, Earth and all the other planets, formed about 4.5 billion years ago


When was the earth and other planets formed in the solar system?

4.6 billion years ago.


Scientists believe that earth and the other planets formed?

first era was the Precambrian


How was the earth initially formed?

The Earth was formed approximately 4.5 billion years ago from a giant cloud of dust and gas in space. As gravity pulled these particles together, they accumulated to form the Earth and other planets in our solar system. This process is known as accretion.


How was the earth created according to science?

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


When were planets formed and how?

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


What are the 5 rocky planets?

The first four planets from sun Mercury, Venus, Earth and Mars are rocky planets other planets in solar system are gaseous or dusty planets.


What do scientist believe happened 4.6 billion years ago?

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.


When do scientists think the asteroids orginated?

At the same time that the Earth (and the other planets) formed : 4.5 billion years ago.


Are there alien planets?

All planets other than Earth could be considered alien. Earth is the only planet known to harbor life.