A green "Grinch-like" shape in a supernova remnant imaged by the James Webb telescope may have come from a blast debris field, scientists proposed. When you purchase through links on our site, ...

The supernova remnant at the center of Cassiopeia A is the youngest known in the Milky Way. (Image credit: NASA, ESA, CSA, D. D. Milisavljevic (Purdue), T. Temim (Princeton), I. De Looze (Ghent ...

The glowing gas and dust of Cassiopeia A is all that remains of a star that exploded in a supernova, and its light reached Earth for the first time 340 years ago.

In this composite photo of supernova remnant Cassiopeia A, created by meshing x-ray images from the Chandra Observatory, visible images from the Hubble Telescope and infrared images from the James ...

SCIENTISTS say they have uncovered a "green monster" in a distant supernova.For the first time astronomers have combined data from NASA’s Chandra X- ...

Captured in JWST images, a bizarre feature of the supernova remnant Cassiopeia A that was named the “Green Monster” has been revealed to be made of material that existed before the explosion.

Cassiopeia A is notable because it's our galaxy's youngest known supernova remnant. It's a mere 11,000 light-years away, and the light from the supernova first reached Earth 340 years ago.

Astronomers solve mystery of 'Green Monster' in famous supernova remnant (photo) News. By Sharmila Kuthunur published 9 January 2024 'We've never had this kind of look at an exploded star before.' ...