SUNSET: 
Watch Stellar Explosions Near and Far (Videos)
New videos from the Solar Orbiter and the Chandra X-ray Observatory capture magnetic avalanches on the Sun and the exploding remnants of a star 17,000 light-years away.
Astronomers Map a Dandelion Supernova
Astronomers have, for the first time, mapped the 3D filamentary structure of a famous dandelion-shaped supernova remnant.
What Happens After a Supernova Blows? Watch and Find Out
New time-lapse videos from the Chandra X-ray Observatory show the Crab Nebula and the Cassiopeia A supernova remnant over more than 20 years.
Cassiopeia A: A Festive Supernova Remnant
New near-infrared observations from the Webb telescope reveal intricate strands of debris from the exploded star.
Astronomers Discover Huge Circular Arc Near the Big Dipper
The 30-degree circular arc is likely a shock front expanding from a star that exploded some 100,000 years ago.
Blast from the Past in Today’s Sky
Astronomers think they have identified the remnant of a supernova recorded by Chinese astronomers in AD 386.
Gamma-ray Supernova Remnants Shed Light on Cosmic Rays
Astronomers have found the gamma-ray-emitting remains of three exploded stars, and the remnants might reveal the origin of cosmic rays.
How to See Cygnus's Other Veil Nebula
You'll be entering uncharted territory when you seek out this little known 'Shadow of the Veil' in Cygnus this summer.
Supernova Remnant in Technicolor
Take a look at this supernova remnant from radio waves to x-rays to see multiple features of its bubble-like expanding shock wave. Supernovae — the dramatic explosions of massive stars ending their lives — can outshine their host galaxies for weeks, allowing them to be seen across millions of light-years…
