In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
14
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The light hitting the earth right now is 30 thousand years old.
163
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185