Astronomers directly imaged a faint companion star orbiting Betelgeuse, solving a decades-old mystery about its strange ...

It's around 1.6 times the mass of the Sun, Howell and his colleagues believe, at an orbital separation of 4 astronomical ...

This breathtaking Hubble image of spiral galaxy NGC 1309 reveals more than swirling stars and glowing dust—it holds a cosmic mystery.

A red supergiant star is surrounded by a sphere of dust and gas so large there is no known explanation for what produced it ...

Using the largest catalog of exploding white dwarf vampire stars ever gathered has provided further evidence that dark energy ...

In the sprawling Hydra constellation, 137 million light-years away, lies NGC 3285B—a dazzling spiral galaxy recently ...

The explosion of a star, called a supernova, is an immensely violent event. It usually involves a star more than eight times the mass of our sun that exhausts its nuclear fuel and undergoes a core ...

An international team of astrophysicists, led by Northwestern University and the University of Leicester in England, has ...

The Top 100 Hubble Pictures Series. Today we are travelling to the Tarantula Nebula or 30 Doradus in the Large Magellanic ...

Pictures of a distant supernova remnant show two concentric rings, providing clear evidence that exploding white dwarf stars ...