A new NASA estimate finds that the meteor that crashed into Russia's Urals last month had been crossing the Earth's orbit for thousands of years.
In this image, a meteorite trail is seen above a residential apartment block in Chelyabinsk. A heavy meteor shower rained down on central Russia, sowing panic as the hurtling space debris smashed windows and injured dozens of stunned locals, officials said. According to a new NASA estimate, the meteor had likely been crossing the Earth's orbit for thousands of years.