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Sunday, February 17, 2013

Russian meteor exploded with force of 30 Hiroshima N-bombs


The meteor that streaked across the Russian skies on Friday, injuring around 1,200 people, exploded with a force 30 times greater than the Hiroshima nuclear bomb, NASA scientists say.

The 55 foot wide rock with a mass of 10,000 tonnes lit up the sky above the Urals region, causing shockwaves and damaging thousands of homes in an event unprecedented in modern times.

"It had an energy greater than (all) the weapons used in World War II," Bill Cooke, leader of the Meteoroid Environments Office at NASA's Marshall Space Flight Center, told the 'New York Daily News'.

The dazzling fireball burned brighter than the Sun as it unleashed nearly 500 kilotons of energy, around 30 times the size of the nuclear bomb dropped on Hiroshima in 1945.

Shockwaves from the aerial explosion injured some 1,200 people and wrecked thousands of homes as residents cowered from the apocalyptic momentum in the city of Chelyabinsk, some 1497 km east of Moscow.

"Imagine a shock wave coming through a city with glass flying from all these tall buildings. Walls collapsed ... doors were blown in and a lot of people were injured by flying debris," Cooke said.

The fiery 643734 kph streak disintegrated 32.5 seconds after blasting through the atmosphere about 24 kilometres up, according to new data culled from five infrared stations located throughout the world.

The trajectory of the Russian meteor (north to south) diverged so greatly from Asteroid DA14's near-Earth flyby (south to north) that scientists insist they are unrelated phenomena.

"They occurred the same day so some people would assume that the meteor was a chunk of DA14 but that's not true," said Cooke.

The meteor is the largest reported since 1908 when one crashed into Tunguska, Siberia, about 4828 km to the east.

"We would expect an event of this magnitude to occur once every 100 years on average," said Paul Chodas of NASA's Near-Earth Object Program Office.

"When you have a fireball of this size we would expect a large number of meteorites to reach the surface and in this case there were probably some large ones," he said.

6 comments:

  1. So, according to the numbers in this article, it ran through the atmosphere for 32.5 seconds at a speed of 643,734 kilometers per hour.

    That's higher than earth's escape velocity. about 16 times Earth's escape velocity, to be exact.

    That's a speed far faster than any human has ever travelled, a measurable percentage of the speed-of-light, and a mere 36 minutes from the moon.

    The trail in the photos shows its path was nearly parallel to the surface of earth. Given those two facts, the speed and the angle, why did it stay within the atmosphere? Since its speed was higher than orbital velocity, at 24Km (80,000 feet) it must have bounced off the atmosphere and continued on. Why didn't it?

    In other words, at that velocity, and flying ballistically, if it didn't explode immediately (we're told it didn't) or hit something, its altitude would immediately begin to INCREASE as it skimmed along the atmosphere. This is because for all practical purposes at that speed it would have been going straight, and the Earth is curved!

    But assuming the numbers are correct, that means that in that time, it covered some 5800 kilometers INSIDE the atmosphere!

    If Chelyabinsk was the end of its trajectory, that means that the beginning of its trajectory (assuming it went for 32 whole seconds within the atmosphere) would have been over the Beaufort Sea in Canada, not only that, its DIRECTION would have had to change by 45 degrees, pitching downwards, to stay within the atmosphere. Given it was travelling at 16 times escape velocity, what provided the non-ballistic force on the object to cause it to curve downwards at such a high speed?

    So, it seems something is wrong. If something hits the atmosphere at several times escape velocity, at a grazing attitude/angle, and doesn't immediately disintegrate, it leaves again. It must.

    I tried this with a very good orbital/atmospheric physics simulator called Orbiter. If I travelled towards Earth on trajectory tangent to the surface at that speed and altitude, it was absolutely impossible to stay within the atmosphere for 32.5 seconds. Whatever object I threw into the physics simulation promptly went back into an elliptical orbit around the sun!

    So, are we sure those numbers are right?

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  2. Other articles are estimating the speed, based on physical measurements, to have been around 66,000 mph, or roughly 106,000 kph. So where did the 643,734 kph figure come from?

    Even at the lower speed, it is still above escape/orbital velocity and could easily have bounced off the atmosphere and gone back up, assuming such a parallel trajectory.

    Many meteors actually do this, they hit the atmosphere and then bounce off.

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  3. Yeah, stupid science. Also, 50' across seems wrong as does 10.000 tons. I had read "size of a bus and 10 tons.

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  4. According to the Russians this object was pulled into Earth by a HAARP tractor beam the US was testing. Instead of crashing in northern Canada this meteor nearly wiped out the city of Chelyabinsk and started WW III. The Russians were barely stopped from wiping out the US base near Guam with an atomic strike in retaliation. Two other meteors ere also pulled down over
    Cuba and N. of San Francisco. The Cuban meteor also did damage on the ground.

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  5. JOE! Excellent analysis!

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  6. Ok, what about THIS alternative explanation!? - "Did God Rods Cause
    A US Space Weapon, Not Meteors, To Hit Russia And Cuba?"
    http://rense.com/general95/godrods.html

    ReplyDelete