Witnesses in southern British Colombia and western Washington State have reported seeing a bright fireball meteor at about 9.40 pm local time on Thursday 16 March 2017. The event is described as a meteor followed by a bright green flash, then a second yellow flash, and was witnessed between Victoria in the west and West Kelowna in the east.
The 16 March 2017 fireball meteor seen from Pitt Meadows in British Columbia. Tammy Kwan/CBC News.
A fireball 
is defined
 as a meteor 
(shooting star) brighter than the 
planet Venus. These are typically caused by pieces of rock burning up in
 the atmosphere, but can be the result of man-made space-junk burning up
 on re-entry. Objects of this size probably enter the Earth's atmosphere
 several times
 a year, though unless they do so over populated areas they are unlikely
 to be noticed. 
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