Lionesses are better hunters than males and do most of the hunting for a pride.
The roar of a lion can be heard from 8 kilometers (5.0 miles) away.
Jupiter's 4 biggest moons are named Europa, Ganymede, Callisto and Io.
The first man made object sent into space was in 1957 when the Russian satellite named Sputnik was launched.
Some of the fastest meteoroids can travel through the solar system at a speed of around 42 kilometres per second (26 miles per second).
The only planet that rotates on its side like a barrel is Uranus. The only planet that spins backwards relative to the others is Venus.
Because of lower gravity, a person who weighs 200 pounds on earth would only weigh 76 pounds on the surface of Mars.
In 2006, astronomers changed the definition of a planet. This means that Pluto is now referred to as a dwarf planet.
Footprints and tyre tracks left behind by astronauts on the moon will stay there forever as there is no wind to blow them away.
Saturn isn't the only ringed planet, other gas giants such as Jupiter, Uranus and Neptune also have rings, they are just less obvious.