Fiery meteor explodes over Russia; 1,100 injured
Another resident, Valya Kazakov, said some elderly women in his neighborhood started crying out that the world was ending.

The many broken windows exposed residents to the bitter cold as temperatures in the city were expected to plummet to minus 20 Celsius (minus 4 Fahrenheit) overnight. The regional governor put out a call for any workers who knew how to repair windows.

Russian-language hashtags for the meteorite quickly shot up into Twitter's top trends.

"Jeez, I just woke up because my bed started shaking! The whole house is moving!" tweeted Alisa Malkova.

Social media was flooded with video from the many dashboard cameras that Russians mount in their cars, in case of pressure from corrupt traffic police or a dispute after an accident.

The dramatic event prompted an array of reactions from prominent Russians.

Prime Minister Dmitry Medvedev, speaking at an economic forum in the Siberian city of Krasnoyarsk, said the meteor could be a symbol for the forum, showing that "not only the economy is vulnerable, but the whole planet."

Vladimir Zhirinovsky, a nationalist leader noted for his vehement statements, blamed the Americans.

"It's not meteors falling. It's the test of a new weapon by the Americans," the RIA Novosti news agency quoted him as saying.

Deputy Prime Minister Dmitry Rogozin said the incident showed the need for leading world powers to develop a system to intercept objects falling from space.

"At the moment, neither we nor the Americans have such technologies" to shoot down meteors or asteroids, he said, according to the Interfax news agency.

Meteroids are small pieces of space debris — usually parts of comets or asteroids — that are on a collision course with the Earth. They become meteors when they enter the Earth's atmosphere. Most meteors burn up in the atmosphere, but if they survive the frictional heating and strike the surface of the Earth they are called meteorites.

NASA said the Russian fireball was the largest reported since 1908, when a meteor hit Tunguska, Siberia, and flattened an estimated 80 million trees. Chelyabinsk is about 5,000 kilometers (3,000 miles) west of Tunguska. The Tunguska blast, attributed to a comet or asteroid fragment, is generally estimated to have been about 10 megatons.

Scientists believe that a far larger meteorite strike on what today is Mexico's Yucatan Peninsula may have been responsible for the extinction of the dinosaurs about 66 million years ago. According to that theory, the impact would have thrown up vast amounts of dust that blanketed the sky for decades and altered the climate on Earth.

The 150-foot space rock that safely hurtled past Earth on Friday was dubbed Asteroid 2012 DA14.

The asteroid was invisible to astronomers in the United States at the time of its closest approach on the opposite of the world. But in Australia, astronomers used binoculars and telescopes to watch the point of light speed across the clear night sky.

Jim Green, NASA's director of planetary science, called the back-to-back celestial events an amazing display.

"This is indeed very rare and it is historic," he said on NASA TV. "These fireballs happen about once a day or so, but we just don't see them because many of them fall over the ocean or in remote areas. "

Experts said the Russian meteor could have produced much more serious problems in the area hosting nuclear and chemical weapons disposal facilities.

Vladimir Chuprov of Greenpeace Russia said the Russian government has underestimated potential risks of the region. He noted that the meteor struck only 100 kilometers (60 miles) from the Mayak nuclear storage and disposal facility, which holds dozens of tons of weapons-grade plutonium.

A chemical weapons disposal facility at Shchuchye also contains some 6,000 tons (5,460 metric tons) of nerve agents, including sarin and VX, about 14 percent of the chemical weapons that Russia is committed to destroy.

The panic and confusion that followed the meteor quickly gave way to typical Russian black humor and entrepreneurial instincts. Several people smashed in the windows of their houses in the hopes of receiving compensation, the RIA Novosti news agency reported.

Others quickly took to the Internet and put what they said were meteorite fragments up for sale.

One of the most popular jokes was that the meteorite was supposed to fall on Dec. 21, 2012 — when many believed the Mayan calendar predicted the end of the world — but was delivered late by Russia's notoriously inefficient postal service.

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AP writers Max Seddon and Stephanie Nano contributed to this story.
   
Copyright 2013 The Associated Press.