"If our solar system is indeed moving this fast, we need to question fundamental assumptions about the large-scale structure ...

A mysterious visitor from another star system is currently flying through our cosmic neighborhood, and scientists are keeping a close eye on it. The recently discovered comet is unlike anything we ...

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. A remarkable ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system. First named A11pl3Z and now designated as ...

3I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the galaxy. By Kenneth Chang For only the third time, astronomers have found ...