New research reveals chemical secrets of Earth’s crust 4.5 billion years ago
The study also provides a new approach to solving one of the biggest enduring scientific mysteries: when did plate tectonics ...
Earth’s oceans weren’t always blue, scientists say
But while lifeless during that time, the planet was already covered by vast oceans dotted with hydrothermal vent systems that ...
Earth takes on ‘eyeball’ vibes from space
Pettit posted his striking footage on social media on Tuesday. The American astronaut used a wide-angle lens to get the ...
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Planet Earth
A distinctive blue and green image of Earth reveals our planet's most remarkable features. At 4.54 billion years old, our home world is a venerable object. But it was only with the arrival of the ...
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Could alien oceans be green: Earth’s past may hold the key to finding life elsewhere
Researchers have found that Earth’s first oceans may not have been blue at all like today. Instead, they may have gleamed in ...
As spring equinox nears, look for the northern lights: We explain why
As the spring equinox approaches, northern lights hunters will scour the skies for breathtaking displays of color.