A B2 bomber dropped the bomb, and on its flight from Missouri it burned roughly 28,900 gallons of jet fuel, releasing 282 metric tons of carbon dioxide into the atmosphere, equal to the yearly collective tailpipe emissions of 66 passenger cars in the U.S.

You wouldn’t have seen it, but immediately after impact, the bomb’s 20-foot-long penetrator drill bit would have ploughed through 60 feet of limestone and dolomite in less than 0.03 seconds.

You could have seen a dull orange flare from the bomb’s work further underground emanating from the hole, but your eyes would probably still be closed, your system still in shock.

For about three seconds, everything would have then been quiet.