Sentences with phrase «first hydrogen bomb test»

Not exact matches

The last several months have been particularly contentious, after North Korea claimed to have tested its first hydrogen bomb and fired a satellite into orbit.

In 1953, after the first test of the hydrogen bomb, the doomsday clock ticked to two minutes until midnight.

The world is closer to nuclear annihilation than at any point since the first hydrogen bombs were tested in the early 1950s, says a group of scientists who monitor global tensions.