Every night, a network of NASA all-sky cameras
scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA’s Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth’s atmosphere and many other characteristics.On Sep. 3, 2014, the network reported 305 fireballs
(300 sporadics, 3 , 1 alpha Aurigid, 1 Southern delta Aquariid)
In this diagram of the inner solar system, all of the fireball orbits intersect at a single point – Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies] – Space Weather.