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Ernesto Guido

Comet Implicated in Tunguska Blast - 0 views

www.centauri-dreams.org/?p=8397

astronomy comets tunguska impact

shared by Ernesto Guido on 01 Jul 09 - Cached
  • Ernesto Guido on 01 Jul 09
     
    Latest research has concluded that the Tunguska explosion was almost certainly caused by a comet entering the Earth's atmosphere. And how researcher Michael Kelly from Cornell University came to that conclusion is quite interesting: He analyzed the space shuttle's exhaust plume and noctilucent clouds.
Ernesto Guido

A Cometary Closeup for NExT - 0 views

www.centauri-dreams.org/?p=8410

astronomy comets next tempel

shared by Ernesto Guido on 01 Jul 09 - Cached
  • Ernesto Guido on 01 Jul 09
     
    Tau Zero journalist Larry Klaes looks at the NExT (New Exploration of Tempel) mission, which gives us a second crack at observing comet Tempel
Ernesto Guido

Arxiv - Asteroids Were Born Big - 0 views

arxiv.org/0907.2512

astronomy asteroids planetesimals

shared by Ernesto Guido on 16 Jul 09 - Cached
  • Ernesto Guido on 16 Jul 09
     
    How big were the first planetesimals? We attempt to answer this question by conducting coagulation simulations in which the planetesimals grow by mutual collisions and form larger bodies and planetary embryos
Ernesto Guido

New Impact on Jupiter? - 0 views

remanzacco.blogspot.com/...new-impact-on-jupiter.html

astronomy impact on jupiter sl9 impact jupiter comets asteroids

shared by Ernesto Guido on 20 Jul 09 - Cached
  • Ernesto Guido on 20 Jul 09
     
    The story of the possible new impact on Jupiter
Ernesto Guido

Secondary condensation on 19P/Borrelly - 0 views

remanzacco.blogspot.com/...ndensation-on-19pborrelly.html

astronomy comets 19P_Borrelly

shared by Ernesto Guido on 19 May 09 - Cached
  • Ernesto Guido on 19 May 09
     
    Secondary "condensation" in 19P/Borrelly, we performed some follow-up about this comet........
Ernesto Guido

Spitzer catches star cooking up comet crystals - 0 views

www.astronomy.com/...default.aspx

astronomy comets solar system

shared by Ernesto Guido on 14 May 09 - Cached
  • Ernesto Guido on 14 May 09
     
    Observations show the production of crystalline silicates like those found in comets and meteorites in our own solar system.
Ernesto Guido

Solar wind tans young asteroids - 0 views

www.astronomy.com/...default.aspx

astronomy asteroids solar wind

shared by Ernesto Guido on 25 Apr 09 - Cached
  • Ernesto Guido on 25 Apr 09
     
    A new study published in Nature this week reveals that asteroid surfaces age and redden faster than previously thought - in less than a million years, the blink of an eye for an asteroid.
Ernesto Guido

Young Asteroids Age Fast with a Solar Wind Tan - 0 views

www.universetoday.com/...age-fast-with-a-solar-wind-tan

astronomy asteroids

shared by Ernesto Guido on 25 Apr 09 - Cached
  • Ernesto Guido on 25 Apr 09
     
    A young asteroid's surface will age prematurely, but it's not caused by the Sun's ultraviolet rays, it's caused by the solar wind…
Ernesto Guido

Asteroid Deflection by Tether - 0 views

www.centauri-dreams.org/?p=7431

astronomy asteroids neo asteroid deflection

shared by Ernesto Guido on 25 Apr 09 - Cached
  • Ernesto Guido on 25 Apr 09
     
    Diverting incoming asteroids is a high priority item, and so is a mission to a nearby asteroid for a close-up study of its composition and a shakeout of operating technologies.
Ernesto Guido

How Will We Prepare for an Asteroid Impact? - 0 views

www.universetoday.com/...prepare-for-an-asteroid-impact

astronomy asteroids impact neo

shared by Ernesto Guido on 25 Apr 09 - Cached
  • Ernesto Guido on 25 Apr 09
     
    If Earthlings discovered a large asteroid heading towards our planet, how would we react? But more importantly would the space agencies and/or world governments be prepared for such an event?
Ernesto Guido

New Blow for Dinosaur-Killing Asteroid Theory - 0 views

www.nsf.gov/...news_summ.jsp

astronomy asteroids impact Chicxulub

shared by Ernesto Guido on 30 Apr 09 - Cached
  • Ernesto Guido on 30 Apr 09
     
    The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, is challenged in a paper to be published in the Journal of the Geological Society on April 27, 2009.
Ernesto Guido

Renewed Challenge to the Dinosaur Killer - 0 views

www.centauri-dreams.org/?p=7526

astronomy asteroids dinosaurs Chicxulub mass extinction

shared by Ernesto Guido on 29 Apr 09 - Cached
  • Ernesto Guido on 29 Apr 09
     
    Gerta Keller (Princeton University) and Thierry Adatte (University of Lausanne) believe the Chicxulub crater in northern Yucatan was formed some 300,000 years before the mass extinction occurred. Moreover, Keller argues in the upcoming Journal of the Geological Society that not a single species went extinct as a result of the impact.
Ernesto Guido

Arxiv - 2006 Fragmentation of Comet 73P/Schwassmann-Wachmann 3B Observed with Subaru/S... - 0 views

arxiv.org/0904.4733

astronomy comets 73P_Schwassmann-Wachmann

shared by Ernesto Guido on 01 May 09 - Cached
  • Ernesto Guido on 01 May 09
     
    We analyzed the Subaru/Suprime-Cam images of 73P/Schwassmann-Wachmann 3B and detected no fewer than 154 mini-comets. We applied synchrone-syndyne analysis, modified for rocket effect analysis, to the mini-fragment spatial distribution. We found that most of these mini-comets were ejected from fragment B by an outburst occurring around 1 April 2006.
Ernesto Guido

Coastal Formations Not Result of Asteroid Impact - 0 views

www.universetoday.com/...-not-result-of-asteroid-impact

astronomy asteroid impact chevrons

shared by Ernesto Guido on 02 May 09 - Cached
  • Ernesto Guido on 02 May 09
     
    Coastal formations called chevrons, large U- or V-shaped features found on coastlines around the world were originally thought to be evidence of ancient
Ernesto Guido

Nearby asteroid found orbiting sun backwards - 0 views

www.newscientist.com/...nd-orbiting-sun-backwards.html

astronomy asteroids comets solar system

shared by Ernesto Guido on 02 May 09 - Cached
  • Ernesto Guido on 02 May 09
     
    The discovery of a 2- to 3-kilometre-wide asteroid in an orbit that goes backwards has set astronomers scratching their heads. It comes closer to Earth than any other object in a 'retrograde' orbit, and astronomers think they should have spotted it before.
Ernesto Guido

2009 HC82: A Burnt-Out, Eccentric and Backward Near-Earth Asteroid - 0 views

www.universetoday.com/...ccentric-and-backward-asteroid

astronomy comets asteroids 2009 HC82

shared by Ernesto Guido on 04 May 09 - Cached
  • Ernesto Guido on 04 May 09
     
    The Solar System often throws up surprises for astronomers, but the recent discovery of a 2- to 3-km wide asteroid called 2009 HC82 has sent observers in a spin. A retrograde spin to be precise.
Ernesto Guido

Arxiv - The Taurid complex meteor showers and asteroids - 0 views

arxiv.org/0905.1639

astronomy meteors asteroids comets Taurids complex

shared by Ernesto Guido on 12 May 09 - Cached
  • Ernesto Guido on 12 May 09
     
    The structure of the Taurid meteor complex based on photographic orbits available in the IAU Meteor database is studied.
Ernesto Guido

Arxiv - The Far Ultraviolet Spectral Signatures of Formaldehyde and Carbon Dioxide in ... - 0 views

arxiv.org/0905.1695

astronomy comets

shared by Ernesto Guido on 13 May 09 - Cached
  • Ernesto Guido on 13 May 09
     
    Observations of four comets made with the Far Ultraviolet Spectroscopic Explorer.
Ernesto Guido

Arxiv - A Multi-Wavelength Study of Parent Volatile Abundances in Comet C/2006 M4 (SWAN) - 0 views

arxiv.org/0905.1927

astronomy comets C_2006 M4 (SWAN)

shared by Ernesto Guido on 13 May 09 - Cached
  • Ernesto Guido on 13 May 09
     
    Volatile organic emissions were detected post-perihelion in the long period comet C/2006 M4 (SWAN) in October and November 2006.
Ernesto Guido

Jupiter sports new 'bruise' from impact - 0 views

www.newscientist.com/...ts-new-bruise-from-impact.html

http:__www.newscientist.com_article_dn17491-jupiter-sports-new-bruise-from-impact.html

shared by Ernesto Guido on 23 Jul 09 - Cached
  • Ernesto Guido on 23 Jul 09
     
    A new black spot about as big as the Earth has been found on Jupiter. Astronomers say it was caused by an impact.
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