A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

Before 3I/ATLAS, the only other confirmed interstellar tourists we've seen were the now-famous, cigar-shaped 'Oumuamua' in ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

In a new study published in The Astrophysical Journal, a group of researchers from the University of Colorado Boulder ...

This rogue star has been traveling the Universe. And now, it's finally entering our Solar System. But this isn't just any ...

TRAPPIST-1e, an Earth-sized world in the system’s habitable zone, is drawing scientific attention as researchers hunt for ...

Beyond the local interstellar clouds and their wispy clumps of hydrogen and helium atoms in the form of gas and dust, the ...

Scientists have discovered the strongest evidence yet of a rocky planet with an atmosphere outside the solar system, ...

In a discovery that's fit for a movie, Northwestern University astronomers have directly imaged a Tatooine-like exoplanet, orbiting two suns. While obtaining an image of a planet beyond our solar ...

The interstellar comet 3I/ATLAS is racing away from the sun. Hubble and JWST track the object's strange composition: high CO2 ...

The International Gemini Observatory caught a glowing glimpse of exocomet 3I/ATLAS which is the third confirmed object ever ...