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 ...

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

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

It has more work to do.

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 ...

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 ...

NASA’s New Horizons probe has woken itself up after 321 days of hibernation. The aerospace agency sent commands to the probe ...

Interstellar travel is not just about building a faster spacecraft; it is about deciding when it is even worth leaving. Generation ships, future propulsion, and the “wait calculation” expose the ...

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