Italian astronomers report the detection of a new X-ray binary (XRB), which has received the designation 4XMM J181330.1-17511 ...

Because Antares is a red supergiant star, it takes more than the blink of an eye to disappear and reappear. I often refer to the constellation Octans the Octant during my planetarium presentations.

Antares is a massive red 'supergiant' star located in the constellation Scorpius, around 550 light years away from Earth. At around 700 times the diameter of our Sun, if Antares was dropped into ...