This week on The Spoop Files, Alex and Myia talk about the most devastating natural explosion since the meteor that killed the dinosaurs. How's that for a big bang?
https://en.wikipedia.org/wiki/Tunguska_event - In this case, Wikipedia is actually a pretty great reference
http://www.bbc.com/earth/story/20160706-in-siberia-in-1908-a-huge-explosion-came-out-of-nowhere - A BBC Earth article about Tunguska that offers a comprehensive look at all of the information we have about the event, as well as the likely explanation (meteor)
https://www.forbes.com/sites/davidbressan/2018/06/30/110-years-after-the-tunguska-event-we-still-arent-sure-what-caused-it/#a1cecf015b50 - A Forbes article that goes even more in depth about the theories surrounding Tunguska
https://allthatsinteresting.com/tunguska-event - An article that cleanly sums up the Tunguska event without getting in to any of the less mainstream theories
https://science.nasa.gov/science-news/science-at-nasa/2008/30jun_tunguska - Even NASA has a page on the event!
https://en.wikipedia.org/wiki/Chelyabinsk_meteor - A similar asteroid airburst from 2013 (Also in Russia, coincidentally)
https://www.wired.com/2013/02/why-does-a-meteor-explode-in-the-air/ - A Wired article describing why meteor airbursts occur
https://news.nationalgeographic.com/news/2013/10/131015-asteroid-burst-russia-meteor-tunguska-space-science/ - An article on airburst meteors and the dangers they pose
https://phys.org/news/2004-08-tunguska-event-ufo-debris-alien.html - Researchers claim to have discovered blocks of alien origin in Tunguska samples
http://www.unmuseum.org/siberia.htm - A comprehensive view of different Tunguska theories