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THREATS: Whoa! 26 atom-bomb-scale asteroid impacts since 2000

Source: earthsky.org

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p>Most exploded over an ocean, and too high in the atmosphere to do damage, but evidence is mounting that asteroid impacts are more frequent than once believed.

 

 

At a press conference on April 22 at the Museum of Flight, three prominent astronauts supporting the B612 Foundation presented a visualization of new data showing evidence for 26 atom-bomb-scale asteroid impacts since 2000. The evidence comes from recently released data from the Nuclear Test Ban Treaty Organization, which operates a network of sensors that monitors Earth around the clock listening for the infrasound signature of nuclear detonations.

 

The astronauts were guests of the Seattle Museum for a special series of public events on Earth Day 2014. Dr. Ed Lu, former US shuttle and Soyuz astronaut and co-founder and CEO of the B612 Foundation was joined by former NASA astronaut Tom Jones, President of the Association of Space Explorers and Apollo 8 astronaut Bill Anders, first chairman of the Nuclear Regulatory Commission and former chairman and CEO of General Dynamics.

 

Between 2000 and 2013, this network detected 26 explosions on Earth ranging in energy from 1 to 600 kilotons — all caused not by nuclear explosions, but rather by asteroid impacts. To put that in perspective, the atomic bomb that destroyed Hiroshima in 1945 exploded with an energy impact of 15 kilotons.

 

While most of these asteroids exploded over an ocean, and too high in the atmosphere to do serious damage on the ground, evidence is mounting that large-scale asteroid impacts on Earth are more frequent than once believed. The Nuclear Test Ban Treaty Organization data is important in estimating the frequency of a potential “city-killer-size” asteroid, which is thought to happen about once a century.

 

The Earth is continuously colliding with fragments of asteroids, the largest in recent times exploding over Tunguska, Siberia, in 1908 with an energy impact of 5-15 megatons. More recently, we witnessed the 600-kiloton impact in Chelyabinsk, Russia, in 2013, and asteroid impacts greater than 20 kilotons occurred in South Sulawesi, Indonesia, in 2009, in the Southern Ocean in 2004, and in the Mediterranean Sea in 2002. Important to note as well is the fact that none of these asteroids were detected or tracked in advance by any existing space-based or terrestrial observatory.

 

Also attending the press conference in Seattle were students from Key Peninsula Middle School. In addition, astronauts Ed Lu, Tom Jones, and Bill Anders joined Museum of Flight CEO Doug King to visit the Challenger Center at the Museum of Flight to discuss asteroids and space-related assets to detect and track asteroids and field questions from the students.

 

“While most large asteroids with the potential to destroy an entire country or continent have been detected, less than 10,000 of the more than a million dangerous asteroids with the potential to destroy an entire major metropolitan area have been found by all existing space or terrestrially-operated observatories,” stated Lu. “Because we don’t know where or when the next major impact will occur, the only thing preventing a catastrophe from a ‘city-killer’ sized asteroid has been blind luck.”

 

The B612 Foundation aims to change that by building the Sentinel Space Telescope Mission, an early warning infrared space telescope for tracking asteroids that would provide many years to deflect an asteroid when it is still millions of miles away. The B612 Sentinel Mission will be the world’s first privately funded deep space mission that will create the first comprehensive dynamic map of our inner solar system, identifying the current and future locations and trajectories of Earth crossing asteroids. Sentinel will detect and track more than 200,000 asteroids in just the first year of operation, after a planned launch in 2018.

 

Via B612 Foundation

Read the rest of this article and find other worthy stories by visiting earthsky.org

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Updated: April 25, 2014 — 6:53 pm

The Author

Rich Fleetwood

Rich is the founder of SurvivalRing, now in it's 20th year, author of multimedia CDs and DVDs, loves the outdoors, his family, his geeky skill-set, and lives in rural Missouri, just a few miles from the Big Muddy. Always ready to help others, he shares what he learns on multiple blogs, social sites, and more. With a background in preparedness and survival skills, training with county, state, and national organizations, and skills in all areas of media and on air experience in live radio and television, Rich is always thinking about the "big picture", when it comes to helping individuals and families prepare for life's little surprises. Since 1997, he has provided guidance, authentic government survival history, and commentary on why we all need to get ready for that fateful day in the future, when we have to get our hands dirty and step in to save the day. He is an award winning videographer (2005 Telly Award), has received state and national scholarly recognition (2006 New Century Scholar and All USA Academic Team), and is a natural with computers, technology, gadgets, small furry mammals, and anything on wheels. Rich likes making friends, solving problems, and creating solutions to everyday issues. He doesn't mind mixing things up, when there is a teaching moment ready to happen. As a constitutional conservative, he's staying quite busy these days. The SurvivalRing Radio Show at www.survivalringradio.com will be coming back SOON!

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