A provocative latest essay by Harvard astrophysicist Avi Loeb has reignited debate over whether interstellar objects passing ...

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 multiple ...

It may not feel like it, but everything in the universe is in constant motion. Our Sun, with all its planets, orbits the center of the Milky Way, flying through the cosmos at around 450,000 miles per ...

When Jupiter finished clearing out its neighborhood, it may have done more than carve a gap in the young Solar System. Just ...

Using a new technique that partly relies on artificial intelligence, researchers spotted potentially more than 10,000 new ...

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place before our solar system existed.