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Keyword: asteroids

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  • China And US At Highest Risk Of Damage From Asteroids

    03/27/2007 11:15:53 AM PDT · by blam · 35 replies · 995+ views
    New Scientist ^ | 3-27-2007 | David Shiga
    China and US at highest risk of damage from asteroids 14:01 27 March 2007 news service David Shiga Simulations show the asteroid impact locations that would produce the most casualties in red. The Pacific coast of Asia is a particularly deadly place for an asteroid to strike because of tsunamis, while a direct strike on some densely populated inland areas could also cause a heavy toll (Illustration: Nick Bailey et al/University of Southampton)The worst places for an asteroid to strike in terms of infrastructure damage are shown here in red, with the north Atlantic appearing prominently (Illustration: Nick Bailey...
  • Exploding robots may scout hazardous asteroids

    01/24/2007 2:37:28 PM PST · by LibWhacker · 18 replies · 427+ views
    New Scientist ^ | 1/22/07
    A fleet of exploding probes could prepare the way for warding off hazardous asteroids. Several of the small spherical robots would land on a single asteroid, some exploding while others listen for vibrations that could reveal the object's inner structure. NASA has a list of more than 800 asteroids considered to be potentially hazardous because their orbits carry them close to Earth's. If one of them is found to be on a collision course, knowing its physical properties will be crucial in devising a mission to divert it.
  • Astronaut Seeks Craft to Bump Asteroids

    01/23/2007 8:52:26 PM PST · by John W · 61 replies · 1,122+ views
    AP via Earthlink ^ | January 23, 2007 | AP
    HONOLULU - NASA astronaut and former University of Hawaii solar physicist Edward Lu is calling for a new spacecraft that would divert asteroids on a path to slam into Earth. The small space tractor, costing between $200 million and $300 million, would hover near an asteroid to exert enough gravitational pull that the space rock's orbit would change and a collision with our planet would be averted, Lu said before a crowd packed into a 300-capacity auditorium at the University of Hawaii-Manoa Monday night. "We're only trying to get a really tiny change in the velocity of the asteroid to...
  • Rocky Finding: Evidence of extrasolar asteroid belt [ Zeta Leporis ]

    01/07/2007 8:37:35 PM PST · by SunkenCiv · 15 replies · 327+ views
    Science News ^ | Week of Jan. 6, 2007; Vol. 171, No. 1, p. 5 | Ron Cowen
    The new measurements pinpoint the location of a disk of warm dust that surrounds Zeta Leporis. The dust lies about the same distance from the star as the solar system's asteroid belt lies from the sun, Margaret M. Moerchen and Charles M. Telesco of the University of Florida in Gainesville and their colleagues report in an upcoming Astrophysical Journal Letters... The close-in dust around Zeta Leporis probably arose when several asteroids bumped into each other, grinding rock into a fine spray of particles, or when a large asteroid, perhaps 100 kilometers in diameter, suffered a cataclysmic wallop, Moerchen and Telesco...
  • Did an Asteroid Impact Cause an Ancient Tsunami?

    11/15/2006 8:00:40 PM PST · by djf · 55 replies · 1,597+ views
    NYT ^ | Nov 14 2006 | SANDRA BLAKESLEE
    At the southern end of Madagascar lie four enormous wedge-shaped sediment deposits, called chevrons, that are composed of material from the ocean floor. Each covers twice the area of Manhattan with sediment as deep as the Chrysler Building is high. On close inspection, the chevron deposits contain deep ocean microfossils that are fused with a medley of metals typically formed by cosmic impacts. And all of them point in the same direction — toward the middle of the Indian Ocean where a newly discovered crater, 18 miles in diameter, lies 12,500 feet below the surface. The explanation is obvious to...
  • Giant comet may collide with Earth late October

    10/09/2006 9:40:33 PM PDT · by tlb · 232 replies · 9,309+ views
    Pravda ^ | October 6, 2006
    According to the Russian astronomer Nikolai Fedorovsky, a giant comet flying at top speed is bound for Earth. Should the comet stay on the collision course, it may hit the planet in late October. The impact will cause devastating tsunamis, earthquakes and avalanches, says Fedorovsky. He saw the killer comet in a telescope two weeks ago. He managed to calculate the comet’s trajectory. We got in touch with Nikolai Fedorovsky: “I’m not trying to scare anybody, I just want to warn the public,” sums up Fedorovsky. “We should pay attention to this suspicious celestial body. We could obtain more accurate...
  • Astronomers Set Up Killer Asteroid Task Force

    08/17/2006 8:48:55 AM PDT · by Nice50BMG · 41 replies · 611+ views
    Fox News ^ | Thursday, August 17, 2006 | AP
    PRAGUE, Czech Republic — Astronomers are stepping up the global effort to scan the skies for "near-Earth objects": asteroids and comets on a potential collision course with the planet and big enough to pack a deadly punch. The International Astronomical Union said Thursday it has set up a special task force to broaden and sharpen its focus on impact threats.
  • Chance of asteroids hitting earth very slim - Russian astronomers

    05/08/2006 10:46:41 AM PDT · by x5452 · 52 replies · 1,026+ views
    INterfax ^ | May 8 2006 12:01PM
    May 8 2006 12:01PM Chance of asteroids hitting earth very slim - Russian astronomers ST.PETERSBURG/MOSCOW. May 8 (Interfax) - The chance of a large asteroid hitting our planet in the next 100 years is "extremely slim," astronomer Sergei Smirnov of the Pulkovo Main Observatory told journalists. Smirnov dismissed as unfounded reports that a giant asteroid could strike the Earth in the summer of 2008 and said this is clear from experts' calculations. U.S. astronomers have lately been closely monitoring a large newly discovered asteroid, which they said has a very little chance of colliding with the earth. The odds of...
  • Weeks After Killing It, NASA Resurrects Mission to Visit Asteroids

    03/29/2006 2:51:33 PM PST · by KevinDavis · 6 replies · 217+ views
    Ny Times ^ | 03/28/06 | KENNETH CHANG and WARREN E. LEARY
    NASA announced yesterday that it was resurrecting Dawn, a spacecraft that will visit two of the solar system's largest asteroids, less than a month after killing the mission. "I'm astonished," said Lucy-Ann McFadden, an astronomer at the University of Maryland and a member of the mission's science team. "I'm excited. I'm ready to go. I was still in denial that we got canceled."
  • Huge asteroid threatening Earth

    03/03/2006 10:28:08 AM PST · by presidio9 · 136 replies · 3,764+ views
    AFP ^ | March 03, 2006
    AN asteroid capable of devastating an area the size of a sub-continent has about a one in 1000 risk of hitting Earth early next century, NASA said today. The rock, 2004 VD17, is about 500m long and has a mass of nearly a billion tonnes. If it hit Earth it would deliver 10,000 megatonnes of energy, equivalent to all the world's nuclear weapons. Spotted on November 27 2004, VD17 was identified as potentially crossing Earth's orbit, with a one in 3000 risk of collision on May 4, 2102. Further observations and calculations have prompted the risk on that day to...
  • NASA Asteroid [Dawn] Mission Won't Launch This Year

    01/21/2006 2:15:30 PM PST · by Fitzcarraldo · 9 replies · 285+ views ^ | 21 January 2006 | Alicia Chang
    LOS ANGELES (AP)—A NASA spacecraft built to explore two of the solar system's largest asteroids won't launch this year because the space agency is dealing with cost overruns and technical issues in the project. The planned summer launch of the Dawn spacecraft has been indefinitely postponed, said Andrew Dantzler, director of NASA's solar system division. Mission managers had been ordered to halt work on Dawn last fall while the project was assessed by an independent review team, which is expected to present its findings to NASA on Jan. 27. Even if NASA gives Dawn the green light, it would take...
  • First Neptune Trojan Discovered

    12/28/2005 3:40:34 PM PST · by SunkenCiv · 7 replies · 533+ views
    Lowell Observatory ^ | January 8, 2003 | Kristi Phillips, Manager of Media Relations and Public Affairs
    This small body, known as 2001 QR322, leads Neptune around its orbit in such a way as to maintain, on average, approximately equal distance from Neptune and the Sun. As such, it mimics the Trojan asteroids of Jupiter which orbit the Sun in two clouds approximately 60 degrees ahead of and behind Jupiter. The first Jovian Trojan was discovered in 1906 and approximately 1,560 such objects are known today. However, until the discovery of 2001 QR322, Trojan-like objects associated with other giant planets had not been found.
  • Asteroid Poses Tiny Danger, but It May Be Lured Away

    11/23/2005 11:41:04 AM PST · by BenLurkin · 72 replies · 1,322+ views
    From a human perspective, Earth-crossing asteroids can have good timing or bad timing. Good timing is when the asteroid and the Earth don't meet. Bad timing is when they do. Astronomers say that a 1,000-foot diameter asteroid discovered last year may have bad timing. There is a slight possibility that the rock, 99942 Apophis, will hit Earth in 2036 after coming within about 20,000 miles in 2029. A collision could cause regional devastation on a scale far worse than last year's tsunami. "The most likely thing is that it is not going to be a threat," said Rusty Schweikart, the...
  • Engineers seek to deflect asteroids on collision course with Earth

    09/27/2005 5:00:09 PM PDT · by xcamel · 23 replies · 571+ views
    The Guardian ^ | September 28, 2005 | Alok Jha
    · Three-year study will use computer simulations · 'It's a small risk, but with a high consequence' British scientists are set to go where only Bruce Willis has gone before: chasing after asteroids on a collision course with Earth. In a three-year £300,000 study funded by the government-backed Engineering and Physical Sciences Research Council, engineers will use computer simulations to work out the feasibility of changing the direction of asteroids. "It's clear from geological records that the Earth has been impacted in the past by large objects," said Colin McInnes of Strathclyde University. Although none of the space objects currently...
  • Asteroid Dust May Influence Weather

    08/31/2005 7:31:04 AM PDT · by aimhigh · 26 replies · 535+ views ^ | 8/31/05 | Sandia National Laboratories
    ALBUQUERQUE, N.M. - Dust from asteroids entering the atmosphere may influence Earth's weather more than previously believed, researchers have found. The asteroid's dust trail as seen by lidar at Davis, Antarctica. The plot shows the strength of the vertical laser light scattered back from the atmosphere as a function of time and altitude above mean sea level. The dust trail, blown by the stratospheric winds, moved through the beam. (Image courtesy of Sandia National Laboratories) In a study to be published this week in the journal Nature, scientists from the Australian Antarctic Division, the University of Western Ontario, the Aerospace...
  • Futurists look beyond, and it's not mere sci-fi

    07/30/2005 8:28:45 AM PDT · by Momaw Nadon · 39 replies · 1,515+ views
    Chicago Tribune ^ | Friday, July 29, 2005 | Russell Working
    Imagine a future in which terrorists seize an embassy and police can send in a remote-controlled insect outfitted with a microscopic video camera that reveals where the gunmen are hiding and what kind of weapons they hold. Or a time when adventure travelers fly to the moon to spend a week at a space colony under the glittering lunar skies--in the way they now visit Antarctica or the North Slope of Alaska. Or a U.S. constitutional convention where delegates draft a new governing document that allows the rest of the world a say in American decision-making. Sound far-fetched? Over 1,000...
  • Asteroids belted

    08/27/2004 2:57:33 PM PDT · by LibWhacker · 1 replies · 303+ views ^ | 8/27/04 | Richard Fisher
    In a sign that the issue is moving up the space community's agenda, researchers from the University of Glasgow will work with ESA and satellite specialist EADS Astrium to determine the best method of deflecting asteroids from a collision course with Earth. They will consider everything from hitting the objects with nuclear weapons to dragging them with a solar sail, and devise accurate mission simulations. Until now space agencies have neglected the topic of diverting asteroids, according to Dr Gianmarco Radice, project leader and member of the space systems engineering research group at Glasgow's department of aerospace engineering. 'Very little...
  • Russian Researchers Say Debris of Alien Spaceship found in Siberia

    08/10/2004 10:28:07 PM PDT · by null and void · 30 replies · 1,454+ views
    MosNews (consider the source!) ^ | 10.08.2004 11:30 MSK (GMT +3), Updated: 15:37 MSK,
    Members of a special expedition researching the site of the famous Tunguska meteorite fall have claimed they had discovered parts of an extraterrestrial device. The expedition, organized by the Siberian Public State Foundation “Tunguska Space Phenomenon” completed its work on the scene of Tunguska meteorite fall on August 9. It was the first expedition to the region since 2000. Guided by the space photos, the researchers scanned a wider territory in the vicinity of the Poligusa village for parts of the space object that crashed into Earth in 1908 and was later called the Tunguska meteorite. The scientists claim that...
  • Probe To 'Look Inside' Asteroids

    07/28/2004 8:22:08 AM PDT · by blam · 28 replies · 956+ views
    BBC ^ | 7-28-2004 | Paul Rincon
    Probe to 'look inside' asteroids By Paul Rincon BBC News Online science staff in Paris, France Studies of asteroids would aid Earth-protection strategies A new space mission concept unveiled at a Paris conference aims to look inside asteroids to reveal how they are made. Deep Interior would use radar to probe the origin and evolution of two near-Earth objects less than 1km across. The mission, which could launch some time later this decade, would also give clues to how the planets evolved. The perceived threat of asteroids colliding with our planet has renewed interest in space missions to understand these...
  • Zots Impacting around the World

    07/14/2004 7:36:03 AM PDT · by Asteroid · 420 replies · 4,540+ views
    Mr. Paul Caruso, as told to Reddy Kilozot
    Hi, I'm sure you are all unaware of the hype! Currently going on around the World via the 'Internet' regarding Comet strikes, Asteroid strikes and 'The end of the World' Armageddon debates. I'm not a professional astronomer, astrologer or a conspiracy theorist, but I can't believe the UK or the WORLD'S mainstream media hasn't picked up on the highly increased number of meteor impacts and sightings over the last few weeks. Why could this be? In the astronomical aspect of things this is huge news. Here are some of the main news headlines over the last few weeks from around...