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 ...

NASA's New Horizons found the solar wind slows as it nears interstellar space, helping improve models of the solar system's ...

New forecasts are helping scientists pinpoint one of the most elusive locations in space: the outer boundary of the Sun’s ...

Viewed from orbit, Jackass Flats — situated in southern Nevada about 65 miles northwest of Las Vegas — could easily be confused for Mars. The alluvial basin is full of tan and gray regolith, hued ...

NASA’s James Webb Space Telescope has captured the first mid-infrared chemical fingerprint of an interstellar object, directly detecting methane gas streaming from comet 3I/ATLAS. The comet, ...

The New Horizons spacecraft sends back its sensational snapshots of Jupiter, and its volcanic moon Io, before the mission's close encounter with Pluto (Photo by: Photo12/Universal Images Group via ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have just discovered a rare interstellar object hurtling ...

Interstellar comet 3I/ATLAS has spent the last several months on a tour of our solar system. NASA spacecraft and telescopes have snapped photos of this celestial visitor over the course of its journey ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

"People will be hurt and killed" if we're not vigilant, scientists warn.