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spacetelescope.bsky.social@spacetelescope.bsky.social |
A strange event happened in 1975, when a nova called HM Sagittae grew 250 times brighter as it ingested gas from a bloated red giant companion it is orbiting. It never really faded away as novas commonly do, but has maintained its brightness for decades. (1/5) 🧵 🔠🧪
1 replies 15 reposts 34 likes
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spacetelescope.bsky.social
@spacetelescope.bsky.social
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New data from Hubble and the retired SOFIA observatory was used to revisit HM Sagittae, one of the strangest binary star systems in our galaxy—40 years after it burst onto the scene as a bright and long-lived nova. (2/5)
1 replies 1 reposts 9 likes