The Hubble Telescope appears as a tiny silhouette during a perfectly timed solar transit captured from Puerto Rico.

Using the Hubble Space Telescope, astronomers have discovered a new type of cosmic object, a cloud of dark matter and gas ...

It will be a spectacular event, but calculating when it will happen is a tricky business. Every now and then, in recent observations, Betelgeuse has grown dimmer or brightened, prompting speculation ...

Something strange happened that made scientists question the influence of companion star Siwarha on Betelgeuse's surrounding ...