3 ms·
I'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
by delbel 9y ago
I'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.