According to Italian amateur astronomer Ernesto Guido, this is only the fourth time in history that an impacting object was observed prior to atmospheric entry.
Bottom line: Asteroid 2019 MO exploded in Earth’s atmosphere on June 22, 2019, with an energy equivalent to about 3 to 5 kilotons of TNT. Such events happen unexpectedly, once or twice yearly, astronomers say. This one was unusual in that the asteroid was detected in the hours before it struck.
Read the rest of the story HERE:
At earthsky.org
At earthsky.org
