Astronomy & Space news

New theory explains how the moon got there

Earth's Moon is an unusual object in our solar system, and now there's a new theory to explain how it got where it is, which puts some twists on the current "giant impact" theory. The work is published Oct. 31 in the journal ...

dateOct 31, 2016 in Space Exploration
shares2212 comments 16

Image: Hubble admires a youthful globular star cluster

Globular clusters offer some of the most spectacular sights in the night sky. These ornate spheres contain hundreds of thousands of stars, and reside in the outskirts of galaxies. The Milky Way contains over 150 such clusters—and ...

dateOct 31, 2016 in Astronomy
shares23 comments 0

Hypervariable galactic nuclei

Extreme variability in the intensity of the optical light of galaxies, by factors of two or more, is of great interest to astronomers. It can flag the presence of rare types of supernovae, for example, or spot sudden accretion ...

dateOct 31, 2016 in Astronomy
shares460 comments 7