EXPLAINED: Cassiopeia a | Rare Historical Photos

Scientists find 'something extraordinary' in famous supernova's troubled heart

Scientists using the Chandra X-ray telescope have uncovered new details about the famous supernova remnant Cassiopeia A.

LiveScience · Sep 6, 2025

Listen to the eerie sounds of an exploded star in new NASA video

To commemorate the 25th anniversary of NASA's Chandra X-ray Observatory, scientists have rereleased new "sonified" images of nearby objects, including the supernova remnant Cassiopeia A.

Space · Sep 5, 2024

James Webb Space Telescope's 'Cosmic Christmas Bauble' earns spot in White House Advent Calendar (photo, video)

The James Webb Space Telescope has imaged a "Cosmic Christmas Bauble" that is actually the aftermath of a supernova. The stunning picture of Cassiopeia A was revealed by Jill Biden as part of the first-ever White House Advent Calendar.

Space · Dec 11, 2023

James Webb Space Telescope reveals awe-inspiring detail of the remnants of an exploded star

Cassiopeia A — a massive accumulation of cosmic dust that has been studied for decades — has only now been seen in clearer detail, thanks to images beamed back from NASA's James Webb Space Telescope.

ABC News · Apr 11, 2023

James Webb Space Telescope studies wreckage of titanic cosmic explosion (video, photo)

The James Webb Space Telescope has investigated the wreckage of a titanic cosmic explosion, capturing a stunning image of the supernova remnant known as Cassiopeia A.

Space · Apr 8, 2023

Look! Fresh NASA image shows a chaotic blue blob supernova remnant

This chaotic scene is where life's ingredients are cast off into space. Cassiopeia A exploded in the 17th century, making it a fairly recent one.

Inverse · Oct 19, 2022

Look! A lopsided supernova may be hiding a mysterious void

Cassiopeia A isn't behaving quite like it should. It could be a strange void in the midst of the system.

Inverse · Apr 11, 2022

NASA captures an electrifying supernova remnant in all its glory

In this edition of Inverse Daily, read how NASA’s IXPE observatory is seeing Cassiopeia A, the Chinese rocket that now lives among manmade junk on the Moon, and more.

Inverse · Feb 18, 2022

Look: NASA reveals electrifying remnants of a star that appeared 400 years ago

For its first science image, the NASA IXPE observatory zoomed in on the remains of a star that appeared in the 17th century, revealing the intensity of X-Ray light coming from the blast.

Inverse · Feb 17, 2022