A single day on Venus is longer than an entire year on Earth.
Only half a billionth of the energy released by the sun reaches Earth.
You can't walk on Jupiter, Saturn, Uranus or Neptune because they have no solid surface.
The escape velocity on Earth is 11 km/s.
You cannot travel faster than the speed of light.
The escape velocity on the event horizon of a black hole is exactly the speed of light.
Once you pass the event horizon, no matter can escape, including light.
Mercury is the most cratered planet in the solar system because of its high orbital velocity.
Venus is the hottest planet in the solar system because of the greenhouse effect and its atmosphere being high with carbon dioxide.