Unlike the Unha-2 rocket, which flew east over Japan’s main island in 2009, the Unha-3 was supposed to travel mostly over ocean during the boost phase on its way to putting a satellite into orbit about 300 miles above Earth. But the rocket broke apart soon after launch, according to U.S. and South Korean officials. Read related article.

Sources: Korean Commitee of Space Technology; James Martin Center for Nonproliferation Studies; NorthKoreaTech.org; AllThingsNuclear.org; wire reports | By Bill Webster and Laris Karklis/The Washington Post April 11, 2012
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