Looking for a sky event this week? Check out our full Sky This Week column. October 30: Mercury, Mars, and Antares This ...

Cassiopeia the Queen is climbing high in the northeast on late August evenings. The constellation’s familiar “W” or “M” shape seems propped up on one side, eternally (by human standards) facing the ...

What a supernova's bubbly interior tells us about exploded stars. — -- Supernovas, the violent explosions of massive stars after they have exhausted their nuclear fuel, have long been one of the ...

The James Webb Space Telescope has captured new imagery of supernova remnant Cassiopeia A. It is 11,000 light-years away in the Cassiopeia constellation. Credit: Space.com | footage courtesy: NASA, ...