Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

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

Could You See Voyager Probes From Up Close in Interstellar Space?

Just when it seemed humanity’s most distant planetary explorer had gone quiet once again, NASA’s New Horizons spacecraft has awakened 6 billion miles from Earth, well beyond Pluto’s orbit. The timing ...

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

Nearly 50 years ago, NASA launched what would become its first interstellar spacecraft, and this year Voyager 1 is set to ...

Originally launched in 1977 to explore the outer planets, Voyager 1 transformed scientists' understanding of Jupiter and ...

Last year, an interstellar traveler entered our solar system. Some speculated that it was an alien spacecraft, but it turned ...

Interstellar comet 3I/ATLAS carries isotopic ratios entirely outside the Solar System range, ESO’s Very Large Telescope has ...

At the edge of our solar system, NASA’s Voyager 1 spacecraft has detected a stunning “wall of fire,” a boundary where interstellar space begins. This record 90,000°F barrier, uncovered by the Voyager ...

A pair of new studies are looking to define this boundary as NASA’s New Horizons spacecraft hurtles towards it. They have ...