The week of May 17, 2015

The Final Frontier
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Meet the heroes keeping us safe from space junk

By Aaron Sankin

It’s time to clear out the clutter.

Features

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The problems with talking to aliens

By Marissa Fessenden

Is there anybody out there? It may be dangerous to find out.

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How we learned to love anthropomorphic space probes

By Gavia Baker-Whitelaw

Our most daring explorers are inanimate, but they feel profoundly human.

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Behind the indie video game sensation that caught NASA’s attention

By Cynthia McKelvey

Kerbal Space Program’s spirit of open-ended experimentation has the gravitational pull of 1,000 suns.

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A brief history of DIY spaceflight

By Becky Ferreira

From the legend of Wan Hu to the Brooklyn Space Program.

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25 iconic images from the Hubble Space Telescope

By Lisa Granshaw and Jason Reed

It’s time to celebrate the Hubble’s 25th anniversary.

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How astronauts turn their pee into coffee

By Mike Wehner

It’s good to the last drop.

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This visual map shows every manned spacecraft drawn to scale

By Dennis Scimeca

Fifty years of human space travel in one image.