The heart of an astronaut actually gets smaller when in outer space.
216
Venus is the only planet that rotates clockwise.
310
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
Summer on Uranus lasts for 21 years.
358
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
Jupiter's moon Ganymede, is larger than the planet Mercury!
149