Italian astronomers report the detection of a new X-ray binary (XRB), which has received the designation 4XMM J181330.1-17511 ...
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February 2025: What's in the Southern Hemisphere sky this month?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.
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