“The meteor that exploded over the Ural Mountains in Russia Friday now appears to have been a small asteroid clearly unrelated to 2012 DA14, which flitted past Earth Friday afternoon. Initially, the Russian Academy of Science estimated the object’s mass at about 10 metric tons (11 US tons). With more data in hand, researchers now say the object had a mass of 7,000 metric tons (7,700 US tons) and a diameter of about 50 feet.”
Source: Russian meteor blast had force of 300-kiloton nuclear warhead (+video) – CSMonitor.com
