The small, icy visitor now racing away from the inner solar system is not just another comet. It is an interstellar object, ...

3I/ATLAS, an interstellar object identified by NASA as a comet, recently passed its closest point to the sun. Scientists around the world are observing its months-long journey to learn more about the ...

Right now a comet is hurtling through our solar system at more than 137,000 miles per hour. But it is not just this interstellar object’s speed that has earthly astronomers glued to their telescopes.

A cool interstellar comet that for millions of years has drifted in the spaces between our stars is now back in our telescope viewing range and will make its closest approach to Earth this week. We’re ...

A freshly-discovered comet has lots of skywatchers training their telescopes on the dawn sky, but pretty soon the new Comet SWAN25F will flip to our evening sky, and allow a lot of us to get a good ...