1. There is a hypothetical particle called a strangelet that we might find in the cores of neutron stars. If one were to strike earth (or any object in the universe), it could turn that matter into further strangelets creating a chain reaction that would result in the Earth being turned into one big strangelet.

20 Creepy Facts That'll Send Chills Down Your Spine - The internet has generated a huge amount of laughs from cats and FAILS. And we all out of cats.

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I wish I could see this for myself. Awesome!