Dr Iain Stewart cave dives in a cenote to reveal a spectaucular hidden world as he tells the story of the colossal meteor strike 65 million years ago that created them and thereby triggered the extinction of the dinosaurs. Stunning clip taken from ground-breaking BBC series. Watch more high quality videos on the Explore YouTube channel from BBC Worldwide here: www.youtube.com
NASA image release September 29, 2011
This image of the distant active galaxy Markarian 509 was taken in April 2007 with the Hubble Space Telescope’s Wide Field Camera 2.
To read more go to: www.nasa.gov/mission_pages/hubble/science/turbulent-black…
Credit: NASA, ESA, G. Kriss (STScI), and J. de Plaa (SRON Netherlands Institute for Space Research); Acknowledgment: B. Peterson (Ohio State University)
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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