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New study suggests Earth has several hidden moons from collision billions of years agocollided with Earth about 4.5 billions years ago. This is how old Earth was 100 million years ago, a time when the planet was ...
A grazing encounter between the Solar System and a passing star could once have changed Earth's orbit enough to wreak havoc on the climate, new research has found. Around 56 million years ago ...
The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young ... formation in our solar system may have taken much longer - up to a hundred million years or so. This ...
When Jupiter was young, about 4.5 billion years ago, a protoplanet with 10 times the mass of Earth crashed head-on ... another planet in its first few million years, the scientists concluded.
About 800 million years ago, oxygen levels reached about 21 percent and began to breathe life into more complex organisms. The oxygen-rich ozone layer was also established, shielding the Earth's ...
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