No, 'years' is a measure of time and 'light years' is a measure of distance.
That depends on how far away the star is. If the exploding star is 1,000 light years away we would see the supernova 1,000 years later. If it is 2,000 light years away we would see it 2,000 years later.
The answer to how many light years is M99 away from earth it is 25100 light years away!
From 3000 light years away, with a big enough telescope, you would be able to see the Sun. As a very dim star.
The duration of Light Years Away is 1.75 hours.
it is 14,000000 light years away
49,666,845 light years away from earth
Million Light Years Away was created in 1998.
Light Years Away was created on 1981-05-20.
Sirius is about 8.6 light years away from us.
A Million Light Years Away was created in 2002.
its about 2.5 million light years away
Alioth is 81 light years away. So is Megrez, Mizar 83 light years away, and Alkaid is 210 light years away!