New measurements suggest that two of the Milky Way's spiral arms are around 10% farther away from Earth than we thought. The findings may require experts to revise estimates of the total size of our ...

New measurements suggest that two of the Milky Way's spiral arms are around 10% farther away from Earth than we thought. The ...

Astronomers used cosmic explosions to find that we may be wrong about our own galaxy.

Using data from NASA’s Chandra X-ray Observatory and the European Space Agency’s XMM-Newton, a team of researchers made ...

The European Space Agency’s Euclid telescope was built to study dark matter and dark energy, but for one day last year, it ...

The Milky Way’s farthest spiral arms have long been sketched more from motion than measurement. Now three violent explosions ...

Euclid is on a mission to chart one-third of the sky in the hopes of shedding light on the enduring mysteries of dark matter ...

As a galactic archaeologist, my job is to reconstruct the past of our galaxy – and read the signs of its future.

The Milky Way could have many more satellite galaxies than scientists have previously been able to predict or observe, according to new research. Cosmologists at Durham University used a new technique ...

Fireworks may not be the only light show this 4th of July weekend (and beyond.) The darkest Arizona skies may deliver ...

The discovery was made using two powerful space telescopes that looked at a number of cosmic explosions which took place ...