It isn’t easy to figure out how the Earth was built, because it happened 4½ billion years ago, and no one was there to watch. So scientists have had to look at what the Earth looks like now and at all ...

Every year, we kick off the break with our summer bucket list printable, a one-page checklist that’s become our go-to for sparking ideas when the “what should we do today?” question hits. It’s packed ...

A glass bead retrieved by China's Chang'e-5 lunar mission is offering a glimpse into the moon's hidden interior and violent past. Witness live views of Earth from the International Space Station as it ...

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