Nuclear winter

Nuclear winter is a hypothetical cold spell that could happen to a planet after a nuclear war on a larger scale. Catastrophic effects of climate change are particles in the atmosphere prevents the sun's rays from reaching the surface. Temperature reductions to several tens of degrees to occur with subsequent mass extinction of plants and animals of extreme cold weather.

Lisa Park thought that planet Novus had suffered a nuclear winter after hearing the two nations on Novus was in the cold war with each other. Matthew Scotts shuttle analyzed the surface. He told for rest of the crew of Destiny the readings that he had discovered that the surface of Novus had colder temperatures. But there was no nuclear winter except one volcanic winter.