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Astronomers decided to demote Pluto from a planet to a “dwarf planet.” Dwarf planets are not planets. Like the the beginning of the twentieth century, there are now eight known planets in the solar system.

The decision might eventually be overturned by the community, but for now, Pluto is just one of many similar objects in its area.

I May Be Addicted to This

Those guys at Science Daily say that you can be addicted to learning. It’s in the brain.

The “click” of comprehension triggers a biochemical cascade that rewards the brain with a shot of natural opium-like substances… While you’re trying to understand a difficult theorem, it’s not fun… But once you get it, you just feel fabulous.