Planets without stars to orbit raise important questions about how planets evolve and what habitability might look like ...

Take a look around wherever you’re sitting. Your phone, the walls, the air, your own body. None of the material in any of it ...

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One exploded star left behind six Earth masses of rocky planet material just 100 million years after the Big Bang, a simulation finds.

Even though our universe is around 13.8 billion years old, it’s constantly growing, which is why most of us can barely keep ...

A pair of giant planets circling a star more than 1,100 light-years from Earth looks almost too bloated to be real. Each world is about the size of Jupiter. Yet both are far lighter than expected, ...

The NASA/ESA/CSA James Webb Space Telescope just solved a conundrum by proving a controversial finding made with the NASA/ESA Hubble Space Telescope more than 20 years ago. In 2003, Hubble provided ...

The universe’s first rocky planets may have gotten their start astonishingly early — perhaps only 100 million years after the Big Bang. Explosions of some of the universe’s first massive stars could ...

A stellar nursery in the Small Magellanic Cloud — a tiny galaxy that orbits our Milky Way — is surprisingly dusty. All rocky planets start as dust grains floating in space. That means the amount of ...

Mysterious blasts of radio waves from across the universe called fast radio bursts help astronomers catalog matter. ESO/M. Kornmesser, CC BY-SA Chris Impey, University of Arizona If you look across ...