Astronomers have discovered a remarkable planetary system where three very different objects orbit a distant star—and their ...

The interstellar comet 3I/ATLAS contains water and carbon molecules at levels never before seen in our solar system. This suggests that it formed around an alien star radically different from and much ...

The mysterious space rock that journeyed through our solar system became notably brighter as it departed, scientists have revealed. Researchers observed that Comet 3I/ATLAS, which one Harvard ...

The universe is at it again; scientists have been baffled by a discovery that turns all the knowledge they have on planetary systems on its head. Scientists have discovered an alien solar system ...