Sketchy Fact #91: Intergalactic Collision

Our Milky Way galaxy is in the process of colliding with the nearby Andromeda galaxy, which is approaching at  140 km per second. It is currently 2.5 million light years away and is the furthest object in the night sky you can spot with the naked eye.

Skecthy Fact #83: Computing the Universe

The world's fastest supercomputer, China's Tianhe-2 can run 100,000 times more calculations each second than there are stars in our Milky Way galaxy. That works out to 300 trillion calculations in less time than it took you to read this sentence.