Discovered by an amateur astronomer, the inbound object is only the second of its kind yet detected.

A massive new report on Jupiter’s moon Io shows that the explosive world is even stranger than anyone expected.

And a hundred more small worlds may be awaiting discovery, astronomers predict, thanks to a new method for combing through NASA data.

The record-setting Chang’e-4 mission might have spotted minerals that would reveal long-held secrets about the moon's origins.

A star created 1,800 years ago after the collision of two distant suns is set to appear in the night sky for the first time – as the light from the crash finally reaches the Earth.

With the aid of the Hubble telescope, scientists have found a bizarre star 1,200 light-years from Earth that appears to be shooting giant balls of plasma into space.