second time

China air force holds drills in Western Pacific for second time this month

Reuters Sep 26, 2016

BEIJING: China's air force said on Sunday it had flown more than 40 bombers and other fighter planes through a strait between Japanese islands on their way to drills in the Western Pacific.

Researchers detect gravitational waves for a second time

AFP Jun 16, 2016

InternationalScienceTechnology

WASHINGTON: A team of international scientists said Wednesday that they had detected gravitational waves -- ripples in space and time, which Albert Einstein predicted a century ago -- for the second time.