Diamonds can be shattered with a hammer.
-104
Iron weighs more after it rusts.
16
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The sun is 330,330 times larger than the earth.
75
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The average temperature at 40,000 feet above sea level is -60 F.
56
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
A ball of glass will bounce higher than a ball made of rubber.
73