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Contents contributed and discussions participated by Ernesto Guido

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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

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

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

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

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

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

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

Comet C/2004 Q2 (MACHHOLZ): Parent Volatiles, a Search for Deuterated Methane, and Con... - 0 views

arxiv.org/0904.3272

astronomy comet machholz comets

shared by Ernesto Guido on 22 Apr 09 - Cached
  • Ernesto Guido on 22 Apr 09
     
    High-dispersion (l/dl ~ 25,000) infrared spectra of Comet C/2004 Q2 (Machholz) were acquired on Nov. 28-29, 2004, and Jan. 19, 2005 (UT dates) with NIRSPEC at the Keck-2 telescope on Mauna Kea.
Ernesto Guido

How to Keep Asteroids Away: Tie Them Up - 0 views

www.universetoday.com/...eep-asteroids-away-tie-them-up

astronomy asteroids neo

shared by Ernesto Guido on 18 Apr 09 - Cached
  • Ernesto Guido on 18 Apr 09
     
    David French, a doctoral candidate in aerospace engineering at North Carolina State University is proposing a new tool for the anti-asteroid arsenal.
Ernesto Guido

Sky-event preview: The 2009 Lyrid meteor shower - 0 views

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

astronomy meteors lyrid meteor shower

shared by Ernesto Guido on 18 Apr 09 - Cached
  • Ernesto Guido on 18 Apr 09
     
    The Lyrid meteor shower peaks April 22, and conditions favor a great display.
Ernesto Guido

Recovery of comet P/2003 H4 (LINEAR) = P/2009 F7 (LINEAR) - 0 views

remanzacco.blogspot.com/...met-p2003-h4-linear-p2009.html

astronomy comets recovery

shared by Ernesto Guido on 18 Apr 09 - Cached
  • Ernesto Guido on 18 Apr 09
     
    IAU Circular No. 9038, issued on 2009 Apr 15, announces the recovery P/2003 H4 (LINEAR) = P/2009 F7 (LINEAR)
Ernesto Guido

Asteroids won't raise killer waves - but mind the splash - 0 views

www.newscientist.com/...aves--but-mind-the-splash.html

astronomy asteroids impacts neo

shared by Ernesto Guido on 16 Apr 09 - Cached
  • Ernesto Guido on 16 Apr 09
     
    New simulations suggest the monster waves created by a small asteroid impact would break before they reached land, but you still wouldn't want to be near
Ernesto Guido

Asteroids and Near-Earth Objects SlideShow - 0 views

dsc.discovery.com/...near-earth-asteroids

astronomy asteroids comets neo

shared by Ernesto Guido on 14 Apr 09 - Cached
  • Ernesto Guido on 14 Apr 09
     
    Millions of asteroids are winging around the solar system, but which ones do we have to fear? Browse these images of our ominous neighbors to find out.
Ernesto Guido

Satellite to study near-Earth asteroids' wobbly signature - 0 views

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

astronomy asteroids nasa lisa

shared by Ernesto Guido on 14 Apr 09 - Cached
  • Ernesto Guido on 14 Apr 09
     
    'Noise' from the LISA mission will give scientists a way to study the mass and number of near-Earth asteroids.
Ernesto Guido

New Circumpolar Comet Yi-SWAN - 0 views

www.skyandtelescope.com/...42672257.html

astronomy new comet comets

shared by Ernesto Guido on 09 Apr 09 - Cached
  • Ernesto Guido on 09 Apr 09
     
    On March 26, 2009, Korean amateur Dae-am Yi caught the small, greenish glow of a new comet with his Canon camera.
Ernesto Guido

New Comet Yi-SWAN - 0 views

www.universetoday.com/...new-comet-yi-swan

astronomy comets yi-swan C_2009 F6

shared by Ernesto Guido on 09 Apr 09 - Cached
  • Ernesto Guido on 09 Apr 09
     
    Are you ready for the new kid on the block? Its name is Comet Yi-SWAN and it's not going to be very long before it's easily within range of small telescopes
Ernesto Guido

Ground-based observations support comet missions - 0 views

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

astronomy deep impact comets

shared by Ernesto Guido on 08 Apr 09 - Cached
  • Ernesto Guido on 08 Apr 09
     
    By combining spacecraft observations with ground-based telescope observations of a comet, scientists can create a more detailed model of what is happening on the comet's surface over time.
Ernesto Guido

SkyandTelescope.com - A Comet Goes to the Swift - 0 views

www.skyandtelescope.com/...42581152.html

astronomy comet swift lulin

shared by Ernesto Guido on 08 Apr 09 - Cached
  • Ernesto Guido on 08 Apr 09
     
    NASA's Swift spacecraft reveals new aspects of Comet Lulin when viewing it in X-rays and the ultraviolet.
Ernesto Guido

New Comet C/2009 F6 (YI-SWAN) - 0 views

remanzacco.blogspot.com/...new-comet-2009-f6.html

astronomy C_2009 F6 (YI-SWAN) comets

shared by Ernesto Guido on 07 Apr 09 - Cached
  • Ernesto Guido on 07 Apr 09
     
    Image and information about the newly discovered comet C/2009 F6 (YI-SWAN).
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