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Praetorianus November 5th, 2017 3:44am

Are you familiar enough with the night sky to notice if a bright star (1st mag or so) would suddenly be missing in a major constellation or a supernova of similar brightness appear (it would look like an additional star that doesn't belong)

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LibertyLover Pokemon 201461036800
11/05/17 2:56 am

Only if it was in the big or Little Dipper, and even then I’m not sure I’d notice a new star.

bower8899 Gone, Probably Forgotten
11/04/17 9:54 pm

The thing is it wouldn't just be gone, a supernova lasts long enough for it to be visible in the sky for a while (obviously, once the light reaches us)

Praetorianus Fair enough.
11/04/17 10:01 pm

Read again, I was talking about two diferent things: a known star suddenly disappearing (hypothetical, it's not going to happen) or a supernova appearing.
My point: would you notice a *change* in the night sky that means a first magnitude object, about as bright as Spica or Pollux, would suddenly disappear or appear?

Praetorianus Fair enough.
11/04/17 9:51 pm

Yes but despite decades of stargazing, I might not notice it if it isn't in a *major*, or well known, constellation like Orion or Cassiopeia.
I could miss 1st mag supernova in Vela or so.