Astronomy Fun Fact #3
The next time you look at the constellation Orion, look at the star that makes his right shoulder (so it'll be on your left). That star is called Betelgeuse and it's about 650 light years away from us. Betelgeuse is an old star, almost near the end of its life, and when it dies, it will blow up in a supernova so bright that it will light up our night sky for months.
But the cool thing is that we're seeing Betelgeuse as it was 650 years ago because that's how long it takes for its light to reach us. So the star could have blown up 649 years, 364 days ago, and tomorrow's night sky will look almost as bright as day.