Dreaming of visiting other stars? The universe has built in walls we cannot break. This video confronts the harsh physics ...

Interstellar object 3I/ATLAS is making its closest approach to Earth in just over a week from now, coming within 167 million ...

Voyager 1, NASA’s deep-space probe, could soon become the first spacecraft to reach a historic milestone. In November 2026, the probe will be one light-day from Earth.

While the Voyager spacecraft are constantly traveling out of the Solar System, sometimes they are getting closer to Earth.

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

Discovered on July 1 by the NASA-funded ATLAS telescope in Chile, 3I/ATLAS is only the third confirmed visitor from another ...

A small, icy visitor from beyond the solar system is giving scientists an unusually close look at the chemistry that may help ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

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 ...

Life on the International Space Station continues with crews arriving and departing, and even some personal care items like ...

Voyager 1 will reach one light-day from Earth in 2026, marking a first for any spacecraft as it continues its journey through ...