BBC Sky at Night Magazine on MSN
We were truly astonished – astronomers say Earth formed from the same material as Mars
Study says Earth's composition is similar to that of Vesta and Mars ...
Some 4.6 billion years ago, when the solar system was born from a vast cloud that collapsed to form the sun and a surrounding disk of whirling gas, no planets yet orbited our star. Back then, besides ...
The standard story of the origin of our solar system has gone like this: 4.6 billion years ago, a giant cloud of dust hung frozen in space. Then the explosion of a nearby star caused part of that dust ...
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