Interstellar comet 3I/ATLAS showed changes in its gas composition after passing close to the sun, offering data on its ...

Observing the interstellar visitor after its closest approach, astronomers found that its composition appears to have changed ...

Add Yahoo as a preferred source to see more of our stories on Google. An interstellar tourist is taking a quick trip through our solar system, becoming one of just three known objects to ever do so, ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

Max Planck Institute for Extraterrestrial Physics scientists have been able to disentangle the X-ray glow originating in our ...