Are asteroids humanity's 'greatest challenge'?
Throughout its 4.5-billion-year history, Earth has been repeatedly pummelled by space rocks that have caused anything from an innocuous splash in the ocean to species annihilation.
Throughout its 4.5-billion-year history, Earth has been repeatedly pummelled by space rocks that have caused anything from an innocuous splash in the ocean to species annihilation.
Space Exploration
Jun 28, 2017
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The box was inconspicuous, but Lawrence Livermore National Laboratory (LLNL) postdoctoral researcher Megan Bruck Syal immediately knew its contents: two meteorites around the size of walnuts. They formed about 4.6 billion ...
Space Exploration
May 10, 2016
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Potentially hazardous asteroids are still looming large in the minds of scientists engaged in planetary defense issues. Numerous strategies describing deflection of near-Earth objects (NEOs) have been proposed, including ...
Space Exploration
Mar 2, 2016
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In a shocking announcement, Russian scientists say they want to test improved ballistic missiles on the asteroid Apophis, which is expected to come dangerously close to Earth in 2036. If this doesn't send chills down your ...
Space Exploration
Feb 17, 2016
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Asteroids headed for a collision with the Earth, if found early enough, can be acted upon to prevent the potentially devastating consequences of an impact. One technique to divert an asteroid, called kinetic impact, uses ...
Space Exploration
Feb 17, 2016
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(Phys.org) —A map released today by NASA's Near Earth Object (NEO) Program reveals that small asteroids frequently enter and disintegrate in the Earth's atmosphere with random distribution around the globe. Released to ...
Space Exploration
Nov 15, 2014
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Bong Wie has heard the snickers. You want to protect the Earth from asteroids? Where were you when the dinosaurs needed you? You want to be like Bruce Willis in that asteroid movie?
Space Exploration
Mar 7, 2013
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Pioneering engineers at the University of Strathclyde in Glasgow are developing an innovative technique based on lasers that could radically change asteroid deflection technology.
Space Exploration
Mar 27, 2012
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(PhysOrg.com) -- An odd, previously unseen landform could provide a window into the geological history of Mars, according to new research by University of Washington geologists.
Space Exploration
Mar 22, 2012
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Jump ropes are used by kids for fun and by athletes for training. But what about the underlying physics? How do jump ropes work? Can important engineering principles be studied?
General Physics
Nov 22, 2010
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