WASHINGTON, May 29 (Reuters) - Astronomers have spotted a star acting unlike any other ever observed as it unleashes a curious combination of radio waves and X-rays, pegging it as an exotic member of ...

A conjunction is an astronomical event in which at least two planets – or, in this case, other celestial bodies – appear to our vantage from Earth to be close together in the sky. The trio of ...

NASA’s Hubble has examined Cloud-9, a strange object with no stars that offers clues about early galaxy formation and dark ...

The moon and Venus will shine vividly alongside a bright star in the early morning in a striking celestial rendezvous that should be visible across the U.S. But unless you're willing to wake up before ...