The epicenter of the Sept. 3, 2017, nuclear test explosion in North Korea occurred about 3.6 kilometers northwest of the country's first nuclear test in October 2006, according to a new high-precision analysis of the explosion and its aftermath.
The epicenter of the Sept. 3, 2017, nuclear test explosion in North Korea occurred about 3.6 kilometers northwest of the country's first nuclear test in October 2006, according to a new high-precision analysis of the explosion and its aftermath.