The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
More than 20 million meteoroids enter Earth's atmosphere every day.
139
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Astronauts get taller when they are in space.
224
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121