"Tunguska Event" Aftermaths.
Reed Richards realized that the Russians had developed a powerful rocket fuel using material taking from the meteor the struck Tunguska in 1908.

He used a similar meteor he found that had crashed into Arizona to create his own rocket fuel to travel to the Moon.. Marya Meshkov was a geologist investigating a site in Siberia where a huge explosion struck in 1908. About 30 kilometres (19 mi) around the place where the event happened, trees were uprooted. Tunguska event is the name for a very large mid-air explosion that occurred on 30 June 1908 in Siberia.Most eyewitnesses talk about one or more explosions that happened around 7:15 a.m. local time. The cause of these explosions is unknown, but a meteorite impact has been suggested as a likely cause.