Space

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The increasing scarcity of Helium

The earth is literally leaking its helium into outer space.

That’s the future of most of the world’s helium over the next 100 years, scientists say. Such is the fate of a gas lighter than air — Earth’s gravitational pull just can’t hold it.

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The Solar System to scale – in the desert

“The only way to see a scale model of the solar system,” Wylie Overstreet says, “is to build one.” So he and a group of friends did just that, tracing out the planets’ orbits and then filming a time-lapse video from a nearby mountaintop in Nevada’s Black Rock Desert.

http://www.youtube.com/zR3Igc3Rhfg

via NPR