The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

NPR's Ari Shapiro talks with astronomer David Jewitt about what we can learn from the third interstellar object to have entered our solar system, a comet-like object known as 3I/ATLAS.

The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything ...

The eyes of every astronomer widened this year when an interstellar traveler was discovered in our solar system.

Tom Zega, a University of Arizona scientist who's worked on samples brought back from the asteroid Bennu, tells The Show more ...

The earliest images of 3I/ATLAS, newly uncovered by Michigan State University, reveal how the interstellar object evolved as ...

NASA’s Magnetospheric Multiscale Mission has uncovered surprising behavior of pickup ions drifting through the solar wind ...

Astronomers simply can't shake the feeling that there's something really off about interstellar object 3I/ATLAS. The ...