Where does the solar system end and interstellar space begin? That's a question scientists have been working to answer using ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

The probe is set to become the third human-made object to leave the solar system, but it must first cross this mysterious ...

Interstellar comet 3I/ATLAS has given astronomers an opportunity they rarely expect to receive. Unlike the countless icy bodies that circle the Sun, this object formed around another star before ...

Space looks empty until you try to cross it. Far beyond Pluto, where sunlight is faint and the planets are long behind, ...

For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

Astronomers have used the James Webb Space Telescope (JWST) to observe an oddball gas giant exoplanet orbiting a dead star.

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion years old—about three times the age of the solar system ...

Along with other recent discoveries, the new finding from Perseverance boosts the case that Mars once hosted conditions that ...

An image shot on a handheld Nikon during the recent Artemis II lunar mission has revealed new insights into the evolution of ...

It catches very low frequency radio waves made by lightning, solar storms and charged particles moving through Earth’s ...

The Sun is the source of energy for life on Earth and is the strongest modulator of the human physical environment. In fact, the Sun’s influence extends throughout the solar system, both through ...