Author Topic: Global Effort Needed to Defend Earth from Asteroids, Astronauts Tell UN  (Read 730 times)

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SPACE.com
By Laura Poppick, Staff Writer
14 hours ago



This NASA graphic shows the orbits of all the known Potentially Hazardous Asteroids (PHAs).


NEW YORK — Members of the United Nations met with distinguished astronauts and cosmonauts this week in New York to begin implementing the first-ever international contingency plan for defending Earth against catastrophic asteroid strikes.

Six of the space travelers involved in these U.N. discussions discussed the asteroid defense effort Friday (Oct. 25) in a news conference hosted by astrophysicist Neil deGrasse Tyson at the American Museum of Natural History. Their goal: to drive home the very-real threats posed by near-Earth objects (NEOs), or asteroids traveling within the radius of Earth's orbit with the sun.

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Re: Global Effort Needed to Defend Earth from Asteroids, Astronauts Tell UN
« Reply #1 on: October 28, 2013, 01:07:48 PM »
Scientists estimate that there are roughly 1 million near-Earth asteroids that could potentially pose a threat to the planet, but only a small fraction of these have actually been detected by telescopes. There are about 100 times more asteroids lurking in space than have ever been located, said Edward Lu, a former NASA astronaut and co-founder of the non-profit B612 Foundation advocating asteroid defense strategies. "Our challenge is to find these asteroids first, before they find us," Lu said.



An artist's illustration of a large asteroid headed for Earth. http://i.space.com/

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Re: Global Effort Needed to Defend Earth from Asteroids, Astronauts Tell UN
« Reply #2 on: October 28, 2013, 01:08:55 PM »
To help achieve this goal, Lu co-founded an organization called the B612 Foundation in 2002. Today, the group is developing a privately built infrared space telescope — called the Sentinel Space Telescope — with the sole purpose of locating threatening asteroids. The foundation hopes to launch the telescope by 2018.

The Sentinel telescope will help space agencies identify threatening near-Earth objects years before they hit Earth, providing governments and space agencies with enough time to take action, Lu and his colleagues said. Such action would entail deploying a spacecraft — or multiple spacecrafts, depending on the size of the space rock — toward the asteroid in order to smack it off course.

The technology and funds to deflect an asteroid in this way already exist, the panel explained, but the Association of Space Explorers, a group that includes active and retired astronauts, decided to involve the United Nations in their decision-making efforts to avoid nationally biased action in the event of an emergency.

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Re: Global Effort Needed to Defend Earth from Asteroids, Astronauts Tell UN
« Reply #3 on: October 28, 2013, 01:11:31 PM »

An artist's illustration of a massive asteroid impact on earth.

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Re: Global Effort Needed to Defend Earth from Asteroids, Astronauts Tell UN
« Reply #4 on: October 28, 2013, 01:12:13 PM »
"The question is, which way do you move [the asteroid]?" former NASA astronaut and B612 co-founder Russell Schweickart said in the news conference. "If something goes wrong in the middle of the deflection, you have now caused havoc in some other nation that was not at risk. And, therefore, this decision of what to do, how to do it and what systems to use have to be coordinated internationally. That's why we took this to the United Nations."

The panel hopes that the discussions with the United Nations this week —which extend from discussions dating back to 2008, when the panel presented the United Nations with the first draft of a report titled "Asteroid Threats: A Call for Global Response" —will improve public awareness of the threats at hand, and encourage policymakers to develop plans and appoint leaders to deal with threats in a timely manner.

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Re: Global Effort Needed to Defend Earth from Asteroids, Astronauts Tell UN
« Reply #5 on: October 28, 2013, 01:13:25 PM »
The explosion of a truck-size asteroid over Chelyabinsk, Russia, this past February —which blew out windows throughout the entire city and injured more than 1,000 people —helped draw public attention to what the panelists described as the often-overlooked and underappreciated threat to the planet.

"It did make a difference in policymakers realizing that this is not just a science-fiction concept, or something that will happen in 100 or 500 years in the future," Thomas Jones, former NASA astronaut and senior research scientist at the Florida Institute for Human and Machine Cognition, told SPACE.com at the news conference. "The fact that it happened right now, I think, enforced the reality."

The recommendations that the group presented to the United Nations this week provide an outline of what governments will ultimately implement in the event of an emergency. However, the details of these recommendations are still in the works, Schweickart said.


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