10.42pm GMT

We're going to wrap up our live blog coverage of the meteor over Russia today. Here's a summary of where things stand:

• A meteor or meteors streaked across the sky over Chelyabinsk, Russia on Friday morning, creating a sonic blast on par with an atomic explosion. Buildings were damaged and glass and doors were blown in. About 1,100 people sought medical treatment, according to the interior ministry, and nearly 50 were hospitalized. The event was widely documented on video.

• Meanwhile an asteroid passed unusually close to Earth, thrilling sky-watchers but posing no danger. Astronomers had been tracking the asteroid, 2012 DA14, which came within about 17,200 miles of Earth, closer than some artificial satellites. The asteroid and meteor were unrelated heavenly visitors.

• Astronomers called for better surveillance of the cosmos to identify potentially dangerous ranging objects. But it appeared no weapon could stop an asteroid on a collision course with Earth.

• The Russian Academy of Sciences says the meteor weighed 10 tons and entered the earth’s atmosphere at a speed of at least 33,000mph (54,000kph) and shattered between 18 and 32 miles above ground.