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The Countdown

The Countdown


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    The Countdown, a collaboration between Scientific American and YouTube's Spacelab, is a biweekly video show highlighting the best stuff happening in space, astronomy and physics. The companion Countdown blog features links to all of the stories mentioned in the show and more. Science journalist Sophie Bushwick is the show's host.
  • 5 Signs of Life on Mars – The Countdown, Episode 37

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    Could Mars support life? In this episode of The Countdown, we run through five intriguing lines of evidence that the red planet was not always as desolate as it appears, and may even be habitable today. More to explore: New Signs of Water on Mars Ramp Up Search for Life (Scientific American) A River Runs [...]

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    5 Things You Should Know about Comet ISON – The Countdown, Episode 36

    ison_youtube

    If you live in the U.S., chances are good you’ll be munching on turkey tomorrow in celebration of Thanksgiving. But millions of miles above your head, Comet ISON will make its closest pass to the sun. It’s still a big question mark what will happen next: ISON could be torn apart by the sun’s gravity. [...]

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    An Asteroid with 6 Tails, and More – The Countdown, Episode 35

    More to explore: Bizarre Asteroid with Six Tails Spotted by Hubble Telescope (Space.com) Liftoff! India’s First Mars Probe Launches Toward the Red Planet (Space.com) Kepler Telescope Finds Plethora of Earth-Size Planets (Scientific American) Chelyabinsk Eyewitnesses Help Scientists Resolve Meteor Mysteries (Scientific American) Gravity Maps Reveal Why the Moon’s Far Side Is Covered with Craters (Nature [...]

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    The Coldest Place in the Universe – The Countdown, Episode 34

    Boomerang Nebula

    More to explore: ALMA Reveals Ghostly Shape of ‘Coldest Place in the Universe’ (National Radio Astronomy Observatory) United Nations to Adopt Asteroid Defense Plan (Scientific American) Earth’s Water Likely Came from Very Early Asteroid Strikes (Space.com) Sun Continues to Emit Solar Flares (NASA) Kepler Spacecraft Finds First-Known Tilted Solar System (Scientific American) And visit the [...]

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    5 Amazing Exoplanets – The Countdown, Episode 33

    Artist's conception of TrES-2b, the darkest known exoplanet.

      More to explore: Exoplanet colour confirmed for first time: it’s blue, but not pale — and nothing like Earth (Scientific American Blog Network) http://blogs.scientificamerican.com/b… Diamond ‘Super-Earth’ May Not be Quite as Precious (University of Arizona) http://uanews.org/story/diamond-super… Strange Exoplanet’s ‘Backwards’ Orbit Explained by Extra Star, Planet (Space.com) http://www.space.com/19421-backward-a… Astronomers Find Most Ancient Planet Yet (Scientific [...]

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    Water on Mars, and More – The Countdown, Episode 32

    Marks left in Martian soil by the Curiosity Rover's SAM instruments, which were used to test for the presence of water. (Credit: NASA)

                    More to explore: Universe May Be Curved, Not Flat (Scientific American) http://www.scientificamerican.com/art… Air Apparent: Pluto’s Eternal Atmosphere (Scientific American) http://www.scientificamerican.com/art… Astronaut and a Writer at the Movies (New York Times) http://www.nytimes.com/2013/10/01/sci… Analysis of Surface Materials by the Curiosity Mars Rover (Science Magazine) http://www.sciencemag.org/content/341… Ancient Supervolcanoes Revealed on [...]

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    Voyager Enters Interstellar Space, and More – The Countdown, Episode 31

    The Voyager 1 spacecraft. (Credit: NASA)

    More to explore: Voyager 1 Leaves the Solar System—for Real This Time (Scientific American) Voyager Has Entered The Interstellar Medium (Scientific American Blog Network) Space Farming: The Final Frontier (Modern Farmer) The inside of our Milky Way in 3D (Max Planck Institute) Moon Mission to Suck Up Lunar Dust (Nature News) (Scientific American is part [...]

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    Miniature Big Bang Created in Ultracold Lab, and More – The Countdown, Episode 30

    Cheng Chin of the University of Chicago stands in front of his ultra-cold vacuum chamber.

    More to explore: Earth life ‘may have come from Mars’ (BBC News) Maybe Mars Seeded Earth’s Life, Maybe It Didn’t (Scientific American Blog Network) China Plans Its First Unmanned Moon Landing This Year (New York Times) China to launch lunar probe for landing mission (Xinhua) NASA Data Reveals Mega-Canyon under Greenland Ice Sheet (NASA) Space [...]

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    “Singing Stars” Reveal Their Secrets, and More – The Countdown, Episode 29

    Plasma erupts from the sun in the shape of a massive handle. (Credit: NASA)

    More to explore: Curiosity Catches Sight of Mars’ Moon Passing the Other (PsiVid) Latest SpaceX Rocket Test Successfully Goes Sideways (New York Times) Public Naming of Planets and Planetary Satellites: Reaching Out for Worldwide Recognitionwith the Help of the IAU [Pdf] (IAU) Around the World in Four Days: NASA Tracks Chelyabinsk Meteor Plume (NASA) Russian [...]

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    Top 5 Places to Look for Alien Life – The Countdown, Episode 28

    europa-report-exterior-space

    More to explore: Is There Life on Venus? (Scitable) Venus May Have Had Continents and Oceans (Nature News) (Scientific American is part of the Nature Publishing Group) Was Venus Alive? ‘The Signs Are Probably There’ (Space.com) Tiny Saturn Moon ID’d As Good Candidate For Alien Life (Wired) Planet Profile of Titan (ESA) The Europa Report: [...]

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