Pluto is smaller than Russia.
9
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
NASA invented baby food as we know it today.
7
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Earth is the only planet in our solar system that's not named after a god or goddess.
17