More northern constellation Cassiopeia, Cassiopeia A is the remnant of a once massive star that died in a violent supernova explosion 325 years ago. Hubble Space Telescope (HST), Spitzer Space ...

Here’s the background — Cassiopeia A exploded as a supernova about 11,000 years ago, and its light finally reached Earth around 1670, although the telescopes at the time weren’t powerful ...

Cassiopeia A is a giant bubble of hot, expanding gas, and it’s the youngest known remnant from a supernova explosion, dating back 340 years ago, in our Milky Way galaxy. The light from this ...

The James Webb Space Telescope has captured new imagery of supernova remnant Cassiopeia A. It is 11,000 light-years away in the Cassiopeia constellation. Credit: Space.com | footage courtesy: NASA, ...

Cassiopeia A is a supernova remnant located about 11,000 light-years from Earth in the constellation Cassiopeia. It spans approximately 10 light-years.

Cassiopeia A is a nebula, or gas cloud, left behind by a supernova in the constellation Cassiopeia, around 11,000 light-years from Earth, making it one of the closest supernova remnants.

On Monday, NASA released the first science images from its new Imaging X-ray Polarimetry Explorer, or IXPE. A look at the Cassiopeia A supernova — the bright remnants of a star that exploded in ...

Researchers looked at supernova remnant Cassiopeia A in a unique way — one that allowed them to map its interior in three dimensions. The story told by that map reveals large-scale structures in ...

At 11,000 light-years away, it's safe to say you won't be able to visit Cassiopeia A even if private space corporations start selling seats to amateur spacefarers. Thanks to a team of scientists ...

Cassiopeia A is a giant bubble of hot, expanding gas, and it’s the youngest known remnant from a supernova explosion, dating back 340 years ago, in our Milky Way galaxy. The light from this ...

Titanium has been discovered in the beautiful remnants of the Cassiopeia A supernova about 11,000 light-years away. This discovery could help scientists understand what leads some giant stars to ...

Titanium has been discovered in the beautiful remnants of the Cassiopeia A supernova about 11,000 light-years away. This discovery could help scientists understand what leads some giant stars to ...