On the 26th of April, 1986 there was a nuclear accident at the Chernobyl Nuclear Power Plant in Ukraine.
The exact time of the accident was recorded as 1:23:44am when a power surge caused a steam explosion which significantly damaged reactor number four. This initial damage caused a second explosion which had two potential causes:
1. The ignition of a mixture of hydrogen gas and air
2. A criticality incident or run away fission event
Current evidence suggests that the latter event occured which ultimately destroyed the roof of the reactor causing the release of radioactive material into the environment.
The world's worst known nuclear disaster was at Chernobyl, in the Ukraine. The Chernobyl Disaster, as it is called, happened on April 26, 1986. There is a link to a Wikipedia article on this below.
Ukraine and Belarus
Ukraine. At the time of the disaster, it was in the Soviet Union.
Because of the disaster at the nuclear power plant in Chernobyl, not many people live there. Chernobyl, Ukraine has a population of 500.
There was no famous disaster (or anything else) at Chernobyl in Russia as there is no such place. However for the disaster that occurred in Chernobyl in the Ukraine, please see the related question.
It was in the Ukraine, however it affected many countries across Europe and the world
You probably mean at Chernobyl in the Ukraine, in 1986
the nuclear meltdown at Chernobyl.
The Ukraine
Chernobyl, Ukraine, in 1986, is probably what you are thinking of.
No.It was a nuclear disaster that happened in 1986
On April 26, 1986