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Science|How Big Are Those Killer Asteroids? A Critic Says NASA Doesn't Know.

New York Times - ‎9 hours ago‎
So finding and tracking all the asteroids that could cross Earth's path would allow officials to issue warnings and potentially provide time to deflect dangerous ones.

Scientists work on plans to defend Earth from killer asteroids

CBS News - ‎May 23, 2016‎
LIVERMORE -- Disaster movies from "Deep Impact" to "Asteroid" to "Armageddon" have mined drama from the mortal threat humanity could face if a massive asteroid were speeding towards Earth. At Lawrence Livermore National Laboratory, scientists are ...

How To 'Optically-Mine' Water From An Asteroid

Forbes - ‎1 hour ago‎
Despite the recent buzz about eventually mining asteroids for metals, their real near-term value may be as space-based sources of water and carbon dioxide from which to make rocket propellant.
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Rogue asteroid that could 'destroy city' entered Earth's atmosphere and just missed planet - ‎May 23, 2016‎
Smaller sized asteroids, which can still devastate huge areas if they struck are the hardest to identify, meaning a sudden and unexpected impact is a real possibility.
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Deep space asteroids could be way more fragile than scientists first thought

Blastr - ‎May 23, 2016‎
New Scientist reports a new study by Desireé Cotto-Figueroa of Arizona State University in Tempe that looked into the makeup and brittleness of meteorites and asteroids. They eventually learned that space rocks could be much more brittle than ...

Incoming asteroids could crumble harmlessly before they hit us

New Scientist - ‎May 20, 2016‎
The skies may be safer than we assumed. Many asteroids are weak and brittle - which could be good news for us on Earth. More than 90 per cent of asteroids and comets larger than a kilometre across in Earth's neighbourhood have already been discovered, ...
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'Hundreds' of gigantic asteroids may have walloped Earth before the dinosaurs

Tech Insider - ‎May 17, 2016‎
About 3.9 billion years ago, countless asteroids and meteorites bombarded the Earth and moon during a violent period called the Late Heavy Bombardment.
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NASA's asteroid-bound spacecraft arrives at Kennedy Space Center

Orlando Sentinel - ‎May 20, 2016‎
NASA's asteroid-bound spacecraft OSIRIS-REx made the trip from Lockheed Martin in Colorado to Kennedy Space Center in Cape Canaveral on Friday, May 21.
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Billions of years ago, asteroids crashed into Mars ocean, unleashing blood red megatsunamis: researchers

National Post - ‎May 19, 2016‎
Caused by asteroids slamming into that ancient ocean three and a half billion years ago, the tsunamis would have dwarfed anything ever seen on Earth.

Matt Taylor: Rosetta Might Be Followed by Mission to Asteroids - ‎May 16, 2016‎
"Comets are leftover material from the beginning of the Solar System, so by studying them we get an idea of what the conditions were like at the beginning.

NASA to Launch Robotic Mission To Collect And Redirect Asteroid Boulders in 2020

Nature World News - ‎May 17, 2016‎
Asteroids are usually seen outside the Earth, sometimes even with just the naked eye. And because it can easily be found, NASA is developing a study where robotic arms will collect and redirect the orbits of known asteroids so scientists can further ...
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THE REAL STAR WARS: Scientists fire up LASERS to protect Earth from asteroids - ‎May 12, 2016‎
Experts based at California's Lawrence Livermore National Laboratory (LLNL) will power up strong energy beams to see if they can destroy asteroids. Initial testing will see the boffins shoot lasers as meteorites that have landed on the ground to see ...

This person's job is to protect us from Armageddon

Fusion - ‎May 20, 2016‎
Astronomers, planetary scientists and astrophysicists have long known about the risks posed to humanity by rogue asteroids.

NASA To Launch Mission: Collect And Redirect Asteroid Boulders By 2020

Science World Report - ‎May 18, 2016‎
Usually seen outside the Earth, sometimes with the naked eye, asteroids are fascinating entities that NASA is certainly curious about.

'Asteroid Buster' UFO Took Down Huge Fireball Over Northeast US, Conspiracy Theorists Claim [Video]

The Inquisitr - ‎May 20, 2016‎
However, UFO hunters claim that the second object appears to have been an “asteroid buster” alien UFO that zoomed in on the huge fireball and impacted on it.

Identity-crisis comet may really be closest asteroid to the sun

New Scientist - ‎May 16, 2016‎
When is a comet not a comet? It's a question astronomers are asking themselves more and more often. Now it seems one of these supposed ice balls might actually be an asteroid that gets within 8 million kilometres of the sun - a cosmic hair's breadth.
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Jupiter May Get Whacked by an Asteroid Every Couple of Months. Ow.

Slate Magazine (blog) - ‎May 23, 2016‎
In 1994, Jupiter was pummeled by the repeated impacts of the comet Shoemaker-Levy 9. The comet had been caught by the planet's gravity earlier, torn apart by the tidal force during a close pass, and then each chunk slammed into Jupiter's upper ...

A New Evidence Of Giant Asteroid Found In Australia

Nature World News - ‎May 23, 2016‎
The size of the new found ancient giant asteroid was up to 40-kilometer-wide, and scientists said this could be the largest asteroid collided into the planet that left a crater with hundreds of kilometers wide. This asteroid was one of the reasons why ...

Comets orbiting nearby sunlike star

EarthSky - ‎11 hours ago‎
Young systems such as this one are very active, with comets and asteroids slamming into each other and into planets. The system has a similar ice composition to our own, so it's a good one to study in order to learn what our solar system looked like ...

Glass beads found in Australia point to huge asteroid hit

Channel News Asia - ‎May 18, 2016‎
SYDNEY: Australian scientists have found evidence of a huge asteroid they say slammed into Earth some 3.46 billion years ago - making it the second oldest known to have hit the planet and larger than the one blamed for wiping out the dinosaurs.