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ScienceCasts: New Year's Asteroid Strike

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04:26
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  • 1 0:13

    Asteroid 2014 AA hit the Atlantic Ocean with the force of 500 tons of TNT.

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  • 2 2:20

    No meteorites could be recovered from the asteroid's explosion in the ocean.

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  • 3 3:47

    It's difficult to forecast asteroids before they hit.

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Visit http://science.nasa.gov/ for more. The New Year started off with a bang when a small asteroid hit Earth. Infrasound records indicate that the space rock exploded in the atmosphere over the Atlantic Ocean like 500 tons of TNT.
04:23
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Visit http://science.nasa.gov/ for breaking science news. On Feb. 15th an asteroid about half the size of a football field will fly past Earth closer than many man-made satellites. Since regular sky surveys began in the 1990s, astronomers have never seen an object so big come so close to our planet.
03:22
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Visit http://science.nasa.gov/ for breaking science news. NASA is tracking a large near-Earth asteroid as it passes by the Earth-Moon system on May 31st. Amateur astronomers in the northern hemisphere may be able to see the space rock for themselves during the 1st week of June.
02:45
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The devastating meteor crash in Russia made us wonder, how many other big strikes has the planet taken? Trace found out and counts down the top four biggest asteroid strikes to ever hit Earth! DNews is a show about the science of everyday life. We post two new videos every day of the week. Read More: http://www.universetoday.com/36037/the-manicouagan-crater/ http://neo.jpl.nasa.gov/images/manicouagan.html http://www.universetoday.com/35116/chicxulub-crater/ http://apod.nasa.gov/apod/ap071114.html http://www.space.com/5573-huge-tunguska-explosion-remains-mysterious-100-years.html http://curiosity.discovery.com/question/chicxulub-factor-k-t-event Watch More http://www.youtube.com/dnewschannel Subscribe http://www.youtube.com/channel/UCzWQYUVCpZqtN93H8RR44Qw?sub_confirmation=1 DNews Twitter https://twitter.com/dnews Anthony Carboni Twitter: https://twitter.com/acarboni Laci Green Twitter https://twitter.com/gogreen18 Trace Dominguez Twitter https://twitter.com/trace501 DNews Facebook http://www.facebook.com/DNews DNews Google+ https://plus.google.com/u/0/106194964544004197170/posts DNews Website http://discoverynews.com/
04:01
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Visit http://science.nasa.gov/ for breaking science news. NASA researchers who monitor the Moon for meteoroid impacts have detected the brightest explosion in the history of their program.
05:08
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Visit http://science.nasa.gov/ for breaking science news. A comet is heading for Mars, and there is a chance that it might hit the Red Planet in October 2014.  An impact wouldn't necessarily mean the end of NASA's Mars program. But it would transform the program along with Mars itself.
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This movie shows the progression of NASA's NEOWISE survey in the year after its Dec. 2013 restart. Each dot represents an asteroid or comet that the mission observed. Green dots represent near-Earth objects (asteroids and comets that come within 1.3 astronomical units of the sun; one astronomical unit is Earth's distance from the sun). Yellow squares represent comets. Gray dots represent all other asteroids, which are mostly in the main asteroid belt between Mars and Jupiter. The orbits of Mercury, Venus, Earth, and Mars are shown. More information at: http://www.jpl.nasa.gov/news/news.php?feature=4444