Mental Floss

SPACE

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The "anti-gravity treadmill" was originally invented by Robert Whalen, a biomechanics researcher at NASA Ames Research Center, in the 1990s. Hint: It *doesn't* defy the laws of physics.

Sarah Fecht




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In this series, mental_floss will examine the engineering problems associated with humanity’s most extreme endeavors, from mining asteroids to colonizing the ocean, and explain how engineers plan to solve them.

David W Brown






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Of course, we’re always spitting out random garbage into space—radio and TV signals, mostly. But the signals on this list are intended specifically to attract aliens.

M Asher Cantrell


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Back in 1638, clergyman John Wilkins wrote an entire science fiction book devoted to the prospect of a lunar voyage. Since Wilkins’ radical proposal, many others have followed in his footsteps by dreaming of ways we could live on the moon.

DeAnna Kerley


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There are two questions that have haunted wannabe astronomers for decades: “Why is our galaxy called the Milky Way?” and “Does it have anything to do with the delicious candy bar?”

DeAnna Kerley


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According to some estimates, several thousand tons of meteorites hit the earth each year—and a few chunks have managed to collide with some rather peculiar targets.

Mark Mancini
NASA

Twelve astronauts have been on the surface of the Moon. On it, they’ve left behind some American flags, some equipment, golf balls, a small statuette to commemorate fallen astronauts and some other, er, artifacts.

Matt Soniak


David A. Aguilar/Harvard-Smithsonian Center for Astrophysics

Of the more than 900 exoplanets discovered to date—planets outside our solar system—none, not a single one, appears to be a nice place to visit or live.

Erik Sofge




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Should human space-travelers ever execute the long-awaited trek to Mars or another distant planet, they'll have baby giraffes to at least partially thank for their voyage.

Mark Mancini


Wikimedia Commons

In late 1908, the scientific community in St. Petersburg and Moscow was galvanized by vague reports filtering out of Siberia, telling of a gigantic, mysterious explosion that summer witnessed only by a handful of native Evenki tribesmen and Russian settle

Erik Sass