One type of event that fits the bill is a gamma-ray burst (GRB)—the most powerful class of explosion in the universe. These ...

Ivy Mike was the world's first hydrogen bomb and had a yield of 10.4 megatons ... photos or video of this explosion. On October 30, 1961, the USSR detonated the largest nuclear weapon ever ...

Astronomers have discovered what they believe to be the largest explosion ever detected. The explosion is more than 10 times brighter than any recorded exploding star - known as a supernova.

Scientists have spotted the biggest cosmic explosion ever recorded. This enormous fireball, which is about 8 billion light years away, is approximately 100 times bigger than the solar system.