Best content in Comets & Asteroids

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

<div class="cArrow"> </div><div class="cContentInner">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</div>

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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

<div class="cArrow"> </div><div class="cContentInner">Tau Zero journalist Larry Klaes looks at the NExT (New Exploration of Tempel) mission, which gives us a second crack at observing comet Tempel </div>

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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.

<div class="cArrow"> </div><div class="cContentInner">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.</div>

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Astronomers lose access to military data - 0 views

www.nature.com/...459897a.html

astronomy asteroids fireball

shared by Ernesto Guido on 18 Jun 09 - No Cached

Ernesto Guido on 18 Jun 09

Satellite information on incoming meteors is blocked.

<div class="cArrow"> </div><div class="cContentInner">Satellite information on incoming meteors is blocked.</div>

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Remanzacco Observatory - Comets & Neo: New Comet P/2009 L2 (YANG-GAO) - 0 views

remanzacco.blogspot.com/...w-comet-p2009-l2-yang-gao.html

astronomy new comet P_2009 L2 (YANG-GAO) comets

shared by Ernesto Guido on 18 Jun 09 - Cached

Ernesto Guido on 18 Jun 09

IAUC Circular No. 9052, issued on 2009, June 16, announces the discovery by Rui Yang and Xing Gao of a new comet on several survey images taken by Gao in the course of the Xingming Comet Survey at Mt. Nanshan using a Canon 350D camera (+ 10.7-cm f/2.8 camera lens).

<div class="cArrow"> </div><div class="cContentInner">IAUC Circular No. 9052, issued on 2009, June 16, announces the discovery by Rui Yang and Xing Gao of a new comet on several survey images taken by Gao in the course of the Xingming Comet Survey at Mt. Nanshan using a Canon 350D camera (+ 10.7-cm f/2.8 camera lens).</div>

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Arxiv - Albedos of Small Jovian Trojans - 0 views

arxiv.org/0906.1786

astronomy Jovian Trojan asteroids albedo comets asteroids

shared by Ernesto Guido on 10 Jun 09 - Cached

Ernesto Guido on 10 Jun 09

We present thermal observations of 44 Jovian Trojan asteroids with diameters (D) ranging from 5 to 24 km.

<div class="cArrow"> </div><div class="cContentInner">We present thermal observations of 44 Jovian Trojan asteroids with diameters (D) ranging from 5 to 24 km.</div>

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A Little Comet Named Christensen - 0 views

www.skyandtelescope.com/...47210242.html

astronomy comets comet Christensen

shared by Ernesto Guido on 09 Jun 09 - Cached

Ernesto Guido on 09 Jun 09

A comet hunt on the morning of May25th turns up a previously discovered comet with a interesting history.

<div class="cArrow"> </div><div class="cContentInner">A comet hunt on the morning of May25th turns up a previously discovered comet with a interesting history. </div>

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Rusty space rocks could signal Mars water - 0 views

www.newscientist.com/...dn17254

astronomy meteorites mars crater

shared by Ernesto Guido on 05 Jun 09 - Cached

Ernesto Guido on 05 Jun 09

Fist-sized stones scattered around Victoria Crater on Mars appear to be meteorites - and might be fragments of the object that punched out the crater, researchers say.

<div class="cArrow"> </div><div class="cContentInner">Fist-sized stones scattered around Victoria Crater on Mars appear to be meteorites - and might be fragments of the object that punched out the crater, researchers say. </div>

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Arxiv - Fuzzy Characterization of Near-Earth-Asteroids - 0 views

arxiv.org/0905.3817

astronomy neo asteroids fuzzy logic near-earth asteroids

shared by Ernesto Guido on 26 May 09 - Cached

Ernesto Guido on 26 May 09

Due to close encounters with the inner planets, Near-Earth-Asteroids (NEAs) can have very chaotic orbits. Because of this chaoticity, a statistical treatment of the dynamical properties of NEAs becomes difficult or even impossible. We propose a new way to classify NEAs by using methods from Fuzzy Logic.

<div class="cArrow"> </div><div class="cContentInner">Due to close encounters with the inner planets, Near-Earth-Asteroids (NEAs) can have very chaotic orbits. Because of this chaoticity, a statistical treatment of the dynamical properties of NEAs becomes difficult or even impossible. We propose a new way to classify NEAs by using methods from Fuzzy Logic. </div>

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Arxiv - Detection of Earth-impacting asteroids with the next generation all-sky surveys - 0 views

arxiv.org/0905.3685

astronomy asteroids survey earthimpacting

shared by Ernesto Guido on 25 May 09 - Cached

Ernesto Guido on 25 May 09

We have performed a simulation of a next generation sky survey's (Pan-STARRS 1) efficiency for detecting Earth-impacting asteroids.

<div class="cArrow"> </div><div class="cContentInner">We have performed a simulation of a next generation sky survey's (Pan-STARRS 1) efficiency for detecting Earth-impacting asteroids.</div>

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A Benevolent Sort of Asteroid Bombardment? - 0 views

www.universetoday.com/...t-sort-of-asteroid-bombardment

astronomy asteroids impacts

shared by Ernesto Guido on 20 May 09 - Cached

Ernesto Guido on 20 May 09

Celestial impacts can bring life as well as wipe it out, say the authors of a new study out of the University of Colorado at Boulder.

<div class="cArrow"> </div><div class="cContentInner">Celestial impacts can bring life as well as wipe it out, say the authors of a new study out of the University of Colorado at Boulder.</div>

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Arxiv - Distribution and properties of fragments and debris from the split comet 73P/S... - 0 views

arxiv.org/0905.3162

astronomy comets 73P

shared by Ernesto Guido on 20 May 09 - Cached

Ernesto Guido on 20 May 09

During 2006 Mar - 2007 Jan, we used the IRAC and MIPS instruments on the Spitzer Space Telescope to study the infrared emission from the ensemble of fragments, meteoroids, and dust tails in the more than 3 degree wide 73P/Schwassmann-Wachmann 3 debris field.

<div class="cArrow"> </div><div class="cContentInner">During 2006 Mar - 2007 Jan, we used the IRAC and MIPS instruments on the Spitzer Space Telescope to study the infrared emission from the ensemble of fragments, meteoroids, and dust tails in the more than 3 degree wide 73P/Schwassmann-Wachmann 3 debris field.</div>

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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........

<div class="cArrow"> </div><div class="cContentInner">Secondary "condensation" in 19P/Borrelly, we performed some follow-up about this comet........</div>

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Comet crystals created in stellar burps - 0 views

www.newscientist.com/...-created-in-stellar-burps.html

astronomy comets

shared by Ernesto Guido on 14 May 09 - Cached

Ernesto Guido on 14 May 09

An analysis of the dust surrounding the outburst of a young star suggests an explanation for how the crystals inside comets are formed

<div class="cArrow"> </div><div class="cContentInner">An analysis of the dust surrounding the outburst of a young star suggests an explanation for how the crystals inside comets are formed</div>

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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.

<div class="cArrow"> </div><div class="cContentInner">Observations show the production of crystalline silicates like those found in comets and meteorites in our own solar system.</div>

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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.

<div class="cArrow"> </div><div class="cContentInner">Volatile organic emissions were detected post-perihelion in the long period comet C/2006 M4 (SWAN) in October and November 2006.</div>

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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.

<div class="cArrow"> </div><div class="cContentInner">Observations of four comets made with the Far Ultraviolet Spectroscopic Explorer.</div>

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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.

<div class="cArrow"> </div><div class="cContentInner">The structure of the Taurid meteor complex based on photographic orbits available in the IAU Meteor database is studied. </div>

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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.

<div class="cArrow"> </div><div class="cContentInner">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.</div>

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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.

<div class="cArrow"> </div><div class="cContentInner">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.</div>

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Comets & Asteroids