Space
Did the Moon’s far side once face Earth?
An analysis of lunar impact craters suggests that the Moon's hidden hemisphere may have pointed our way - until an asteroid flipped it around
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Life
Methane pockets may narrow search for Mars life
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Space
Angry Sun could spell disaster on Earth
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Space
Were Mercury and Mars separated at birth?
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Space
Gallery: Twin rovers celebrate five years on Mars
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Space
What has been moving rocks on Mars?
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Space
Danger ahead as the Sun goes quiet
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Space
2008: The year in the solar system
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Earth
Ancient Earth was a barren waterworld
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Space
Mystery stone circles may point to water on Mars
Circles of rocky material sorted by size suggest that the local Martian climate was once much warmer than thought
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Space
Mars rovers reach fifth anniversary
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Life
Long-sought carbonate minerals found on Mars
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Space
Tonight’s Moon is biggest in 15 years
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Life
Swirling waters boost chance of life on Europa
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