The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Astronauts get taller when they are in space.
224
Summer on Uranus lasts for 21 years.
358
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The sun is 330,330 times larger than the earth!
190
It 'snows' metal on Venus.
13
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20