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Rare Naked-Eye Nova

August 9, 2021: Every 20 years or so, a thermonuclear explosion occurs on the surface of RS Oph, a white dwarf in the constellation Ophiuchus. Yesterday, it happened again. On Aug. 8th, the brightness of the tiny star increased 600-fold, from magnitude +12 to +5. Keith Geary of Ireland was the first to notice. Hours […]

Rare Naked-Eye Nova

Categories: Uncategorized

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