Tagged: asteroids

NASA prepares for asteroid impact within the next 2 decades: “It’s going to happen”

(SHTFPLAN.COM) — NASA is preparing for the big one, as many astronomists have found several major rocks that will be headed straight for earth in the next 10-15 years and beyond.

The threat of a destructive asteroid event encroaching upon our life has become an increasing concern, and it is gaining serious attention. In the long run, it is an inevitability.

Though major asteroids big enough to wipe out life across the entire planet are rare, scientists believe they have taken place and reset entire epochs. Moreover, smaller asteroids, comets or meteors can all do major damage, even if they aren’t record breaking hunks of space rock.

via the UK Metro:

When American government representatives asked NASA head Charles Boden what the best response to a large asteroid headed for New York City would be, his answer was simple: ‘Pray.’

But what would happen if a smaller asteroid hit Los Angeles?

Describing the scenario as a ‘not if – but when,’ NASA recently simulated what would happen if a 300 to 800ft asteroid approached Los Angeles with an 100% chance of impact.

‘It’s not a matter of if – but when – we will deal with such a situation,’ said Thomas Zurbuchen, Associate Administrator for NASA’s Science Mission Directorate in Washington.

‘But unlike any other time in our history, we now have the ability to respond to an impact threat through continued observations, predictions, response planning and mitigation.’

What will it mean for civilization as we know it? There is a definite threat of an existential crisis that would change the planet over night – though the chances are extremely low, there is still a chance.

How much warning would we have? We could have as little as three days warning of an asteroid which would blast London with the power of a hydrogen bomb.

And it’s possible that we might have no warning at all – at least with a smaller asteroid capable of shattering windows across the city.

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Bigger asteroids could cause nearly unimaginable damage – wiping out many species and plunging Earth into a bleak winter lasting for years – although the larger an asteroid is, the more warning we would have of its approach.

‘The high degree of initial uncertainty coupled with the relatively long impact warning time made this scenario unique and especially challenging for emergency managers,’ said FEMA National Response Coordination Branch Chief Leviticus A. Lewis.

On the other hand, really big asteroid are routinely monitored and there are several known ‘big ones’ that will approach in the next decade or so… and while they might be headed for the planet, space agencies aren’t planning to take it lying down, instead, they have a plan to exploit it as a major opportunity, born perhaps, out of an unavoidable risk they hope to mitigate.

Now that researchers are getting good at spotting these objects and tracking their path, scientists are beginning to formulate workable strategies for knocking any incoming asteroids off their trajectories and even ‘catching’ them in Earth’s orbit to mine and exploit.

This man on stage at a Ted Talk explains what is at stake:

Phil Plait: How to defend Earth from asteroids

Yes, asteroid defense is now a major enterprise, and somewhere in the shadows a team is gearing up to outdo the casts of Armageddon and Deep Impact combined.

When asteroids do hit, the damage they can do is unimaginably catastrophic – and can easily dwarf the power of a nuclear detonation, depending upon the size of the incoming rock.

But what is perhaps worse than a rock that could pack the punch of “3 billion nukes” is one that is just big enough to destroy a major area, but too small for NASA or other groups to track effectively. In fact, the latter scenario happens all the time – not long ago, a big enough meteor hit and NASA had no idea until it was too late.

Will they catch the one that counts? And will anyone be ready if they don’t?

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Raiding the 66 million-year-old crater holding the secrets of the asteroid that wiped out the dinosaurs

(UK TELEGRAPH) — Scientists are traveling back more than 60 million years in history to drill deep under the ocean floor in search of clues about the event that wiped out the dinosaurs, and nearly extinguished life on earth.

Some 15 miles off the coast of Mexico’s Yucatan Peninsula, on a platform above the crater left behind when a massive asteroid struck the earth, they are traveling back through 66 million years of the earth’s history.

The area surrounding the crater, known as Chicxulub, is now characterized by serene seas and breathtaking sunsets. But it was once the site of a collision with the force of about 100 million atomic bombs.

Joanna Morgan, a professor of geophysics at Imperial College London and co-chief of the study at Chicxulub, describes the immediate aftermath of the asteroid’s impact:

“The first thing you’d see would be thermal radiation, so it’s very much like a nuclear explosion. You get a great big, expanding vapor plume that then at a certain temperature turns red hot and radiates heat,” she says, explaining that everything within 1000km – an area that on a current map includes Miami to the Northeast, Mexico City to the West and stretches down to Nicaragua to the South – would be incinerated.

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Scientists are traveling back more than 60 million years in history by drilling under the ocean floor for clues about the event that wiped out the dinosaurs.

Apocalypse on the way? Scientists fear asteroids, killer robots and deadly diseases could wipe out humanity

(UK MIRROR) — The rise of robots and deadly viruses are among the threats that could wipe out swathes of humanity – but governments are failing to prepare properly for them, a new report warns

Catastrophic climate change, nuclear war and natural disasters such as super volcanoes and asteroids could also pose a deadly risk to mankind, researchers said.

It may sound like the stuff of sci-fi films, but experts said these apocalyptic threats are more likely than many realize.

The report Global Catastrophic Risks, compiled by a team from Oxford University, the Global Challenges Foundation and the Global Priorities Project, ranks dangers that could wipe out 10% or more of the human population. Read more »

Asteroid swept within moon’s distance on the 5th of April

(EARTHSKY) — On April 5, 2016, at 02:21 UTC), a 6-meter-large near-Earth asteroid labeled 2016 FW13 made an extremely close, but safe, sweep past the Earth. Astronomers knew in advance that the asteroid would come within 200,000 miles (320,000 km) of Earth – inside the moon’s orbit. Gianluca Masi at the Virtual Telescope Project sent this photo to EarthSky. He wrote on his website:

At Virtual Telescope, we tried to grab it, despite the uncertain weather and hazy sky.

The image above is a single 180-seconds exposure, remotely taken with PlaneWave 17?+Paramount ME+SBIG STL-6303E robotic unit part of the Virtual Telescope. The robotic mount tracked the VERY fast (305″/minute) apparent motion of the asteroid, so stars are trailing, while the asteroid is perfectly tracked (the minor planet is the little sharp dot in the center).

At the imaging time, the object was at about magnitude 18.5 [ed.note: much too faint to be viewed with the eye] and at about 220,000 miles (356,000 km) from our planet. This is, once again, a super result, showing the amazing capabilities of the Virtual Telescope in tracking extremely demanding asteroids.

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