The Mystery of the Missing Xenon: Fishy Data From N Korea's Nuke Test

80beats
By Eliza Strickland
Jun 18, 2009 3:45 AMNov 5, 2019 8:58 PM
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When North Korea announced on May 25th that it had conducted its second underground test of a nuclear weapon, scientists weren't surprised: They had already picked up seismic readings indicating a subterranean explosion. While seismologists say the readings carried subtle signatures that strongly suggest that the blast was caused by a nuclear device rather than conventional explosives, scientists were still waiting for one more piece of evidence--

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