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  • This Is NASA's New Plan to Detect and Destroy Asteroids Before They Hit Earth

    EXCERPT:
    ...
    NASA has updated its plans to deflect potentially hazardous Earth-bound asteroids — and none of them involve Bruce Willis.

    The White House Office of Science and Technology Policy released a new report today (June 20) titled the "National Near-Earth Object Preparedness Strategy and Action Plan." The 18-page document outlines the steps that NASA and the Federal Emergency Management Agency (FEMA) will take over the next 10 years to both prevent dangerous asteroids from striking Earth and prepare the country for the potential consequences of such an event.

    Officials with NASA, FEMA and the White House discussed the new asteroid-mitigation strategies in a teleconference with the media today. "An asteroid impact is one of the possible scenarios that we must be prepared for," Leviticus Lewis, chief of FEMA's National Response Coordination Branch, told reporters during the teleconference, adding that a catastrophic asteroid strike is "a low-probability but high-consequence event" for which "some degree of preparedness is necessary." [Related: How Trump's Space Force Would Help Protect Earth from Future Asteroid Threats]
    ...
    https://www.space.com/40943-nasa-ast...ense-plan.html

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    • How Trump's Space Force Would Help Protect Earth from Future Asteroid Threats
      ...
      If a military Space Force like the one proposed by President Donald Trump becomes a reality, odds are, it would play a role in defending Earth from an incoming asteroid.

      In a report released today (June 20), NASA and other federal officials unveiled what the United States should do over the next 10 years to safeguard Earth from potential asteroid impacts. That 18-page plan, called the "The National Near-Earth Object Preparedness Strategy and Action Plan," would involve work from agencies across the federal government, White House officials said — even, potentially, Trump's proposed Space Force.

      "One of the things that should be clear from the report is that the responsibility for responding, and preparing response, is spread and shared throughout the U.S. government," Aaron Miles, of the White House Office of Science and Technology Policy, said in response to a question about a Space Force's role. "So everybody brings capabilities to the table … One of the objectives of this plan is coordinating and leveraging those capabilities where they are across the government." [How to Defend Earth Against Asteroids]
      ...
      https://www.space.com/40949-trump-sp...d-defense.html

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      • A couple of related threads:

        Trump wants to militarize space

        US Space Force...

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        • Huge fireball lights up Russian skies
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          More than five years after a large space rock slammed into the atmosphere over Russia, shattering thousands of windows in the city of Chelyabinsk below, another meteor exploded in the sky over the country last week, lighting up the early morning sky.

          The fireball was captured on camera near the town of Lipetsk, between Moscow and the Ukrainian border. It glows bright for a second, leaving a trail of smoke that lingers for several minutes afterwards.

          The impact of the meteor with Earth's atmosphere was picked up by US government sensors used to detect nuclear explosions, among other things. NASA estimates the resulting explosion packed a punch of about 2.8 kilotons, which pales compared with the 440 kiloton blast over Chelyabinsk in 2013, but is the most explosive asteroid entry measured so far in 2018.
          ...
          https://www.msn.com/en-us/news/world...7CF?li=BBnbcA1

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          • International Asteroid Day: Are we ready if an asteroid strikes Earth?
            ...
            Saturday is International Asteroid Day, commemorating the Earth's largest recorded asteroid impact while focusing on the real danger of asteroids that could collide with Earth.

            In 1908, a powerful asteroid struck the Podkamennaya Tunguska River in a remote Siberian forest of Russia. The event leveled trees and destroyed forests across 770 square miles which is equal to the size of three quarters of the US state of Rhode Island. The impact threw people to the ground in a town 40 miles away.

            Five years ago, an asteroid entered Earth's atmosphere over Chelyabinsk, Russia. It exploded in the air, releasing 20 to 30 times more energy than that of the first atomic bombs, generating brightness greater than the sun, exuding heat, damaging more than 7,000 buildings and injuring more than 1,000 people.
            ...
            https://www.msn.com/en-us/news/scien...wl4?li=BBnbcA1

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            • Mesmerizing video shows what would happen if an asteroid crashed into Earth's oceans
              ...
              In films like Armageddon, Hollywood has tried (and failed) to take on the question of what would happen if a comet or asteroid plunged into the oceans on Earth, but what has scientific research actually determined it may look like?

              America's National Center for Atmospheric Research (NCAR) has posted a new video illustrating what could happen if an asteroid crashed into one of our oceans, and it's fascinating.

              Based on data collected by Los Alamos National Laboratory scientists Galen R. Gisler and John M. Patchett, referred to as the Deep Water Impact Ensemble Data Set, these simulations show asteroids of various sizes entering the water from different angles. It's the scale and size of the aftermath that's the truly stunning part.
              ....
              https://mashable.com/article/asteroi...e#nXK_3SUbekqy

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              • NASA to crash 13,500mph spacecraft into ASTEROID in mission to stop deadly strike on Earth
                NASA is planning to smash a spacecraft into an asteroid in the next phase of its planetary defence experiment.
                ....
                As usual, Daily Star is being a bit hyperbolic;
                ....
                The asteroid that NASA aims to hit is not actually a threat to Earth, but by smashing into it, the DART crew will be able to see if a similar deflection would work on future asteroids.

                In the test, a NASA craft will slam into its target – asteroid Didymos – to see whether it can successfully change the direction of the rock.

                Didymos is approximately 800m across and has a secondary orbiting body – known as a “moonlet” – that is 150m in size.

                Using state-of-the-art technology, the spaceship will smash into the smaller satellite at a distance of 11 million km from Earth.
                ....
                https://www.dailystar.co.uk/news/wei...ike-earth-dart

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                • Amazing satellite imagery shows huge METEOR exploding in Earth's atmosphere

                  The video clearly shows the plume and shadow of the meteor, as it passes over the Bering Strait
                  ...
                  Amazing satellite imagery has captured the moment a huge meteor exploded in the Earth's atmosphere with 10 times the energy of the Hiroshima atomic bomb.

                  The meteor explosion occurred in December 2018 , but went largely unnoticed because it blew up over the Bering Sea.
                  ...
                  https://www.mirror.co.uk/science/ama...-huge-14173925

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                  • The Car That Got Smashed by a Meteorite –
                    It Went Right Through the Trunk

                    Mar 27, 2019
                    Ian Harvey
                    ...
                    https://www.thevintagenews.com/2019/...peekskill-car/

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                    • Simulated asteroid threat to occur next week

                      ...

                      NASA, FEMA and other agencies will be responding to the simulated threat of an impending asteroid strike.
                      The exercise, which will take place during the International Academy of Astronautics Planetary Defense Conference, will serve as a trial run of a potentially catastrophic asteroid impact scenario.
                      ...
                      https://www.unexplained-mysteries.co...ccur-next-week

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                      • A massive asteroid with its own moon trailing behind will pass by Earth this weekend
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                        An asteroid nearly a mile wide with a moon of its own is expected to pass by Earth this weekend, traveling at 48,000 mph. The space rock, known as asteroid 1999 KW4, was discovered 20 years ago and is so large that it is orbited by a moon.

                        On Saturday evening, 1999 KW4 will make its closest approach to Earth. It will be visible until May 27. Because it carries a large moon along with it, the asteroid is technically designated as a binary system.

                        A binary system is defined as two celestial objects close enough to orbit each other, according to NASA.

                        The Las Cumbres Observatory describes 1999 KW4 as "slightly squashed at the poles and with a mountain ridge around the equator, which runs all the way around the asteroid. This ridge gives the primary an appearance similar to a walnut or a spinning top."
                        ...
                        https://www.cbsnews.com/news/asteroi...ng-earth-nasa/

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                        • Reporter, columnist, and war correspondent Gordon Dillow has been writing and researching for over thirty years. In the first half, he discussed why the number one threat to the extinction of the human species is from a huge asteroid hurtling out of the deep cosmos on a collision course with Earth, and what thousands of people around the globe are doing to detect and defend against them. "It's not a question of if we're going to be impacted by a significant asteroid," he said, "it's a question of when. It could be 200 years from now, or it could be next Tuesday." While the asteroid Apophis is predicted to come within 19,000 miles of Earth in 2029, the biggest concern is yet unidentified space rocks on an impact course with us, though larger ones will likely be spotted at least slightly in advance, he noted.

                          Last month, there was a Planetary Defense Conference with astronomers and disaster management teams, who play out hypothetical "war games," he reported. In one scenario, with an 800 ft. asteroid on a collision course with Denver, rather than using nuclear weapons to nudge it out of the way, the consensus choice of the conference members was to employ a "kinetic impactor"-- basically, ramming the asteroid with an unmanned spacecraft, in the hopes of slowing down its path so it misses Earth. One of the biggest and best-preserved impact sites is Meteor Crater in Arizona. About 50,000 years ago, an asteroid about half the size of a city block left a crater that's almost a mile wide and several hundred feet deep. Imagine, Dillow remarked, what devastation such a space rock would cause if it was to hit a metropolitan area today.
                          ...
                          https://www.coasttocoastam.com/show/2019/06/05

                          Comment


                          • Evidence of a Gigantic Impact Crater Found Off Scottish Coast
                            ...
                            Some 1.2 billion years ago, an asteroid measuring over 1 kilometer (0.6 miles) wide smashed into northwest Scotland. Trouble is, scientists aren’t sure exactly where the meteorite struck, as traces of the crater are long gone. With new research, however, scientists are starting to hone in on the impact zone.

                            A study led by Kenneth Amor from the Department of Earth Sciences at Oxford University suggests an asteroid measuring between 1 and 2 kilometers (0.6 to 1.2 miles) wide smashed into Scotland’s Minch Basin around 1.2 billion years ago. The estimated location of this ancient collision is just off the Highlands coast, around 15 to 20 kilometers (9 to 12 miles) west of Enard Bay.

                            The crater is no longer visible on the seafloor, having been buried by younger rocks over the course of hundreds of millions of years. Evidence of the ancient impact was detected in the reddish-colored rocks of the Stac Fada deposit on the shores nearby. Analysis of these minerals allowed Amor and his colleagues to triangulate the location of the crater, which they describe in research published today in the Journal of the Geological Society.
                            ...
                            https://gizmodo.com/evidence-of-a-gi...ish-1835375329

                            Comment


                            • A “city-killing” asteroid just zipped by Earth. Why didn’t we see it coming?
                              ...
                              On Thursday, an asteroid called 2019 OK, traveling at almost 15 miles a second, came unusually close to impacting Earth. The asteroid passed by about 43,500 miles away — closer to Earth than our moon is. It was one of the closest known approaches of an asteroid to Earth since we started closely tracking the movements of objects in space.

                              If you had binoculars and knew exactly where to look, you could have briefly seen 2019 OK in the sky.

                              NASA tracks large asteroids in order to identify any that might be on a threatening trajectory toward Earth. But 2019 OK was first seen a few days ago, and was only definitively identified as an asteroid yesterday — hours before it passed right by us.

                              How’d they miss it? Well, while 2019 OK could have done a lot of damage if we’d gotten very unlucky — as Swinburne University astronomer Alan Duffy told the Sydney Morning-Herald, the asteroid would have struck Earth with “over 30 times the energy of the atomic blast at Hiroshima” — it’s not actually all that big. The asteroid is estimated to be “between 187 feet and 427 feet in diameter.” The largest passenger aircraft in service today (the Airbus A380-800) is about 240 feet long, so spotting this asteroid would have been a bit like spotting a single big commercial jet in the vast expanse of space — traveling at 15 miles a second and coming toward us directly from the sun, which makes spotting it more difficult.
                              ...
                              https://www.msn.com/en-us/news/techn...z&ocid=msnbcrd

                              Coming from the direction of the Sun, this might have been a laggard from the Beta Taurids stream;
                              https://en.wikipedia.org/wiki/Beta_Taurids
                              Could also be a stray from the Geminids;
                              https://www.amsmeteors.org/tag/geminids/

                              An interesting take on the Taurids from about 20 years ago ...
                              http://www.enterprisemission.com/oh_my_god.htm

                              Comment


                              • According to a BBC bulletin this morning two medium sized asteroids are crossing Earth's orbit about now. An 'expert' reassured the public that they weren't big enough to be civilisation killers and would merely wipe out everyone in any continent that was impacted and change the weather for decades - so not that big a deal then . Fortunately they will pass about 3 million miles away so no need to cancel any season tickets etc
                                Human history becomes more and more a race between education and catastrophe (H G Wells)
                                Mit der Dummheit kaempfen Goetter selbst vergebens (Friedrich von Schiller)

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