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Would a supernova actually be visible like that? The article says it would have been brighter than the moon and visible during the day? How long would it have
by giarc 9y ago
Would a supernova actually be visible like that? The article says it would have been brighter than the moon and visible during the day? How long would it have been visible for?
- ddebernardy 9y agoNo idea for how long this one was exactly (apart from short), but something brighter than the moon and visible during daytime is fairly plausible. Some stuff out there can end up brighter than the sun, too: https://youtu.be/FJB7gbjiJKw?t=4m13s https://youtu.be/FJB7gbjiJKw?t=4m13s
- delbel 9y agoI've seen two in my lifetime one in 2008 and one in 2013, both at night. they lasted about 3-5 seconds and both were at night
- giarc 9y agoWere you looking through a telescope or were they visible to the naked eye?
- delbel 9y agovisible to the naked eye
- lutorm 9y agoThose are not supernovae, which brighten and fade over a span of weeks. (The energy input of core-collapse supernovae is the radioactive decay of Nickel-56 (half life 6 days) and Cobalt-56 (77 days).) Edit: those may have been Iridium flares that you saw.
- kiliantics 9y agoYes, if it happened within our galaxy. It has happened other times too, like this example from more recently: https://en.wikipedia.org/wiki/SN_1054 https://en.wikipedia.org/wiki/SN_1054