Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

The study says that large cosmological surveys like Euclid and DESI can provide hints of new physics by looking at billions ...

Easy: Venus is the weirdest planet in the solar system. The most distant major planet from the sun and the last stop before ...

Max Planck Institute for Extraterrestrial Physics scientists have been able to disentangle the X-ray glow originating in our ...

Interstellar comet 3I/ATLAS is even more extreme. The ratio of semi-heavy water to regular water is 30 times larger than in ...

The sun is an incomprehensibly gigantic, constantly roiling nuclear furnace—but some days are even busier than others. Based ...

The farthest spacecraft from Earth has shut down another instrument in the hopes of buying time for an upgrade that could ...

The interplanetary comet 3I/ATLAS is remarkably rich in a specific type of water that contains deuterium, meaning it came ...

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

NPR's Scott Detrow talks with Regina Barber and Nell Greenfieldboyce about the Artemis moon missions, the "seismic quiet" during a solar eclipse, and the origins of a mysterious interstellar visitor.