Tokyo’s skies were lit up by an explosive alien object early Thursday morning, which also came with a sonic boom, according to reports.
The videos of the event show a spectacular light with green and purplish hues flying in the sky for a few seconds around 2:30 am local time, before the light goes out.
“I thought someone living (in the condo) above had knocked over a shelf,” said a local, according to the Japan Times.
The impact of what was probably a small asteroid colliding with our atmosphere has been detected by some of the infrasound monitoring stations around the world monitored by the Comprehensive Nuclear-Test-Ban Treaty Organization.
The International Meteorological Organization reports that the meteoroid was visible from much of the Japanese Kanto region.
“We were able to calculate an incoming asteroid source energy of about (165 tonnes or 150 metric tonnes) of TNT,” reads an IMO blog article.
IMO estimates that the space rock could have been about 5 feet (1.6 meters) in diameter with a mass of about 1.8 tonnes (1.6 tonnes). By comparison, the meteorite that exploded over Russia in 2013 and blew up thousands of windows in the city of Chelyabinsk was probably 10 to 20 times more massive.
Fireballs are common events, although one large enough to generate a sound boom is a rarer event, especially when it passes over one of the largest cities in the world. Remember to keep an eye on the sky!