Skywatch: Look back in time when you gaze upon Andromeda

The first highlight in this week’s night sky is our nearest galactic neighbor, Andromeda.
The Andromeda galaxy, known as M31 on star charts, is the closest galaxy to Earth even though it’s 2.5 million light years away from us. For a little perspective, light travels at approximately 186,000 miles per second.Travel that fast for 2.5 million years and you’ll reach Andromeda.It’s pretty mind-boggling that something that far away can be seen from Earth.Even crazier is that it