Cassiopeia A

Supernova Remnant Cassiopeia A is Lopsided

Cassiopeia A is the remnant of a supernova that exploded 11,000 light-years away. The light from the exploding star likely…

8 months ago

The First Image From NASA’s new X-ray Observatory

It’s first light for one of the newest space observatories! The Imaging X-Ray Polarimetry Explorer team has released their first…

10 months ago

Stars Boil Before They Blow Up, Says NuSTAR

Supernovas are some of the most energetic and powerful events in the observable Universe. Briefly outshining entire galaxies, they are…

9 years ago

Cosmic C.S.I.: Searching for the Origins of the Solar System in Two Grains of Sand

"The total number of stars in the Universe is larger than all the grains of sand on all the beaches…

10 years ago

Neutron Star at Core of Cas A Has Carbon Atmosphere

A Chandra X-ray Observatory image of the supernova remnant Cassiopeia A. Credit: NASA/CXC Supernova remnant Cassiopeia A (Cas A) has…

13 years ago