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Chemical signatures indicate the meteorite came from an early planet that met an untimely end during the formation of our ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Picture this: You’re watching a sunset on the beach during the summer. As the sun sinks down into the ...

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I grew up in a faithful Methodist household in deep-red Texas during the George W. Bush years, when the political sway of evangelicals was at its zenith. At the same time, evangelists of a robust ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen. In 1935, ...

Viruses typically aren’t considered ‘alive,’ as many core biological functions are outsourced to their potential hosts. But a newly discovered organism appears to straddle the line between virus and ...

Knotted structures once imagined by Lord Kelvin may actually have shaped the universe’s earliest moments, according to new research showing how two powerful symmetries could have created stable ...

Spacetime isn’t something that exists; it’s a model for describing how events happen. Treating events as objects creates philosophical confusion and fuels misconceptions, such as time-travel paradoxes ...

Some things in cosmology may simply be unknowable. Why is there something rather than nothing? What lies outside the universe? What is inside a black hole? That last one has been niggling at ...