Though space is chock-full of interstellar medium, it tends to be invisible unless lit up by a celestial spotlight. Sometimes ...

The shells of carbon-rich dust are expanding outward into space at the breakneck velocity of 1,600 miles per second.

Once upon a time, the core of a massive star collapsed, creating a shockwave that blasted outward, ripping the star apart as ...

The shockwave Webb studied emerged from Cassiopeia A, now a neutron star, about 11,000 light-years from Earth. After the ...