Astronauts on the International Space Station observe about 15 sunrises and sunsets every day

Astronauts become two inches taller in space

The Earth's rate of rotation is slowing at a rate of about 17 milliseconds a century. The length of a day for the dinosaurs was closer to 22 hours

On Saturn's moon Titan, gravity is so low and the atmosphere is so thick that humans could fly by flapping arms like wings

Windy planet