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The scariest thing you’ve ever done: Chris Hadfield at TED2014

The scariest thing you’ve ever done: Chris Hadfield at TED2014

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Or, asks retired colonel Chris Hadfield to the crowd at TED2014, “What’s the most dangerous? And, why did you do it?” For Hadfield, an astronaut with the Canadian Space Agency and a commander of the International Space Station for 3 months, it was to ride a rocket ship into orbit. Watch Chris Hadfield’s TED Talk >> []

6 talks to watch this Moon Day

6 talks to watch this Moon Day

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On July 20, 1969, Neil Armstrong became the first human to walk on the moon. Moon Day is held every July 20 to commemorate this momentous feat. 43 years later, humanity is still looking to the sky, mesmerized by lunar bodies. However, it is not just Earth’s moon we’re studying anymore. With better satellites and []

Say cheese, world. Saturn is watching.

Say cheese, world. Saturn is watching.

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In her 2007 TED Talk, “This is Saturn,” planetary scientist Carolyn Porco blew some minds with images taken by Cassini, the robot spaceship launched in October 1997 to study and photograph Saturn and its accompanying moons. Gleaning “oohs” and “aahs” from the assembled TED audience, she concluded with a stunning shot of a backlit picture []

TED Global newsmakers: Raspberry Pi goes to space

TED Global newsmakers: Raspberry Pi goes to space

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A raspberry has now gone where no raspberry has (presumably) gone before. The photo of the Earth’s curvature above was not taken with an expensive camera aboard a rocket. No, it was taken using a Raspberry Pi — the $25 single-board computer — and a Raspberry Pi camera, a new low-cost peripheral that started shipping []

Planck satellite data: What it can tell us about the universe

Planck satellite data: What it can tell us about the universe

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Today—March 21, 2013—the much-anticipated cosmological results from the Planck satellite have been released. In a recent blog post on her own website, TED Fellow and cosmologist Renée Hlozek describes why this is a big day for astrophysics and cosmology. We asked her to explain what the excitement is all about. “Planck is the ‘next generation’ satellite that measures the tiny fluctuations in []

New playlists: “Ancient clues,” “Planes, trains and automobiles” and “Are we alone in the universe?”

New playlists: “Ancient clues,” “Planes, trains and automobiles” and “Are we alone in the universe?”

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TED playlists are collections of talks around a topic, built for you in a thoughtful sequence to illuminate ideas in context. This weekend, three new playlists are available: “Ancient clues,” “Planes, trains and automobiles” and “Are we alone in the universe?” Ancient clues Five fascinating talks by archaeologists and evolutionary biologists about humanity’s beginnings and []

Can we deflect meteors and asteroids? A TEDx talk that describes how

Can we deflect meteors and asteroids? A TEDx talk that describes how

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It’s a humbling day to be an Earthling. Just sixteen hours before the highly-anticipated flyby of the asteroid 2012 DA14, the skies above the Chelyabinsk region of Russia were shattered by the explosion of an incoming meteor. Although fortunately nobody appears to have been killed by the blast, more than 1,000 people reported injuries, mostly from flying glass and []