On 1 July 2025, astronomers using the ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope in Rio Hurtado, Chile, detected a faint, fast-moving object unlike anything seen before.

"If our solar system is indeed moving this fast, we need to question fundamental assumptions about the large-scale structure of the universe." When you purchase through links on our site, we may ...

Big questions about 3I/ATLAS remain, some of which may be impossible to answer — including where exactly it came from Big questions about 3I/ATLAS remain, some of which may be impossible to answer — ...

New measurements of radio galaxies reveal that the solar system is racing through the universe at over three times the speed predicted by standard cosmology. Using highly sensitive data from ...

NASA unveiled close-up pictures on Wednesday of the interstellar comet that's making a quick one-and-done tour of the solar system. Discovered over the summer, the comet known as 3I/Atlas is only ...

Voyager 1, launched in 1977, has traveled farther than any spacecraft in human history. After more than four decades of silent endurance through space, it now sails beyond the orbit of the outer ...