The Andromeda Galaxy is the nearest galaxy outside our Milky Way galaxy at 2.5 million light-years away and is heading this way. It is expected to collide with our galaxy in around 4-5 billion years. It is about twice the size of our galaxy and has one trillion stars. To follow Brendan O’Keeffe’s photography online, head to his Facebook page by searching for Brendan O’Keeffe Astrophotographer, or on Instagram @astrobrendy.
9°C