12 h, apr 25, 1986 y - The Chernobyl Disaster
Description:
On April 25, 1986, during an experiment designed to test the safety of an emergency core cooling feature, reactor 4 at the Chernobyl plant suffered a catastrophic power increase, leading to explosions in its core.Added to timeline:
Date:
12 h, apr 25, 1986 y
Now
~ 40 years ago