A 370-meter-wide asteroid has orbited Earth for decades, and scientists say the impact could be catastrophic.
A series of very unfortunate events would have to come together to strike – but if it does, you could kiss him
Asteroid Apophis 99942 has long been classified as near-surface space rock, causing a brief panic in December 2004, according to estimates there was a probability of 3 percent, that it could hit the earth in 2029.
After scientists had some time to properly study the mammoth stone, they discovered in 2006 that the asteroid would instead pass a gravitational keyhole ̵
A strike of 2036 was, however, since then considered almost impossible held the year 2068 to look with a tiny probability of 150,000 collision.
While Apophis never could hit the Earth's surface, the famous astrophysicist and author Neil deGrasse Tyson spoke daunting about what might happen.
Dr. would cause terrible damage and could potentially wipe out the entire west coast of North America.
"In the era of observing the cosmos with technology, this will be the next, biggest thing we'll ever see," he said. "The orbit we have now is uncertain enough, because these things are difficult too We can not tell you exactly where this trajectory will be.
"We know that it will not hit Earth, we know it will be closer than the orbiting satellites.
"But there is a 600 miles (965 km) long zone – we call it the keyhole – and when the asteroid passes in the middle of it, it will hit Earth 13 years later."
Scientists have the keyhole since Dr. Dr. Tyson estimated that the asteroid would be hit 800km west of Santa Monica, a popular coastal suburb of Los Angeles.] The impact of the asteroid, already accelerated by the Earth's atmosphere, would trigger a tsunami.
"When it crashes through the center (the keyhole), it crashes into the depths of the Pacific Ocean 4 km (three miles), at which point it explodes and caves in the Pacific in a 4 km (three miles) wide hole.
"this is from a tsunami wave from this place, of the 15 m (50 feet) high, send outside.  "Oceans do not like holes, so this three-mile-high wall does what it does?"
"It falls back into the hole with such ferocity that it rises high into the atmosphere and back into the ocean falls and kavitiert the ocean again.
"Now you do a cavity a second time. This cycle lasts about 50 seconds, you can calculate it."
As hundreds of people Dr. ,
"So here you are on the beaches of Malibu and a tsunami comes in," he said.
"Unlike the tsunami in Indonesia, which was a wave that went deep into the coast, this first wave needs a water supply so that the next wave actually sucks to create itself."
"This tsunami So it will only take you about a quarter of a mile before it gets sucked out again so that the next wave comes in. Here's the problem, whatever the coast has it is now brought back to the sea and the next tsunami brings it back to the Coast.
"All the million dollar houses in Malibu are brought to the sea and then back, but they are in a slightly different shape." "So, whatever happens, all the artificial stuff, all the houses, factories, they go into the ablative force that cleans the entire west coast of North America. "19659002] Dr. Tyson said the world would know on April 12, 2029, whether the asteroid" threaded the keyhole "and left the North Americans seven years to find a new home Finding it was nearly impossible with the tiny keyhole.
In 2008, NASA confirmed that Apophis could be one in 45,000 by 2036.
Until February 2014, the likelihood of an impact was calculated to be 12 April 2068 from the JPL Sentry risk table as one of 150,000.