The explosion of a star is a dramatic event, but the remains the star leaves behind can be even more dramatic. A new mid-infrared image from NASA's James Webb Space Telescope provides one stunning ...

Some 350 years ago, the dodo bird went extinct, Sir Isaac Newton invented calculus, and Cassiopeia A (Cas A) burst into existence. Cassiopeia A is supernova remnant that originally formed when a star ...

A stunning new image from the James Webb Space Telescope shows a famous supernova remnant called Cassiopeia A, or Cas A. When a massive star comes to the end of its life and explodes in a huge ...

A new image of a supernova remnant reveals wonders, beauty, secrets of star structure and building blocks of life. Cassiopeia A (Cas A) is a supernova remnant located about 11,000 light-years from ...

Cassiopeia A (Cas A) is a supernova remnant located about 11,000 light-years from Earth in the constellation Cassiopeia. It spans approximately 10 light-years. This new image uses data from Webb’s Mid ...