“It’s very slow, but over billions of years, it’s a very strong effect.” That is the main surprise of the observations of the ...

Passages of the Solar System have only been established in three interstellar objects, but the construction of new telescopes ...

All eyes have been on the nearly 5-6 km long exocomet, including NASA’s Transiting Exoplanet Survey Satellite, aka TESS.

This week in science: the choice between tea or coffee could have greater consequences than you think; interstellar comet 3I/ATLAS makes its closest pass to Earth; astronomers track a runaway ...

NASA’s TESS spacecraft captured dozens of images of interstellar comet 3I/ATLAS in. The data show the rare visitor behaves ...

Avi Loeb warns 3I/ATLAS's symmetrical jets defy comet norms, hinting at possible tech. Hubble data and expert debate fuel the mystery.

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien ...

3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar ...