Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...

In addition to helping the researchers nail down the nebula's ellipsoidal structure, the 3D model also confirmed that the ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

Located about 1,300 light-years from Earth, these young stars, also known as protostars, reside in a hotbed for star ...

Our sun is a lonely star. At least half the stars in our galaxy have binary companions. This was nicely illustrated in the ...

Discover the fascinating story of the 'blue lurker,' a mysterious star in the M67 star cluster studied by NASA's Hubble ...

Incompatible values are determined for the speed at which the universe expands. Now the mysterious discrepancy deepens.

The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous — and highly debated ...

Could time itself actually explain our universe's expansion? Our current cosmological model—known as lambda cold dark matter, ...

NASA astronaut Nick Hague will install patches to the agency’s NICER (Neutron star Interior Composition Explorer) X-ray ...

The name 'blue lurker' might sound like a villainous character from a superhero movie. But it is a rare class of star that NASA's Hubble Space Telescope explored by looking deeply into the open star ...