Russians relieved mushroom cloud is just a cloud By . Yaron Steinbuch. Published Aug. 29, 2016, 6:11 p.m. ET. View this post on Instagram.

Wildfires can become hot enough to produce rare mushroom-cloud like formation known as pyrocumulus clouds. When they form they will tower above the ash and smoke.

Video captures mushroom cloud towering over a town near Moscow after a massive explosion rocked a Russian factory. ... An icon in the shape of a lightning bolt. Impact Link.

The Other Mushroom Clouds By JONATHAN FETTER-VORM AUG. 7, 2015 A column of debris was all that remained of Fat Man, the atomic bomb dropped on Nagasaki on Aug. 9, 1945.

The cloud, resembling a "nuclear mushroom" is a kind of cumulonimbus, the spokesperson said. "Warm air is lighter than cold air. Its rise into the middle layers of the atmosphere can be seen in ...

The scientists found that mushroom shapes only occur in “head-on” collisions – when the incoming gas cloud’s trajectory is no more than 5° away from being perpendicular to the galactic plane.