The accident at Chernobyl released at least 100 times more radiation than the atomic bombs dropped on Hiroshima and Nagasaki. Thousands of residents were displaced and an incalculable number of Europeans still hold the scars from what happened that disastrous night in Chernobyl. The accident at Chernobyl changed the image of the Soviet Union and provided a grave reminder of the true power of nuclear energy. But was it the catalyst for the downfall of the Union? Find out, as we take you into the heart of the disaster and what went wrong, hour by hour.