In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
Sound doesn't travel in space.
255
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Summer on Uranus lasts for 21 years.
358