Group items tagged astronomy - Comets & Asteroids

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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Small Asteroid 2009 VA Whizzes By The Earth - 0 views

neo.jpl.nasa.gov/...news166.html

astronomy asteroid 2009 VA neo

shared by Ernesto Guido on 10 Nov 09 - Cached

Ernesto Guido on 10 Nov 09

A newly discovered asteroid designated 2009 VA, which is only about 7 meters in size, passed about 2 Earth radii (14,000 km) from the Earth's surface Nov. 6 at around 16:30 EST. This is the third-closest known (non-impacting) Earth approach on record for a cataloged asteroid.

<div class="cArrow"> </div><div class="cContentInner">A newly discovered asteroid designated 2009 VA, which is only about 7 meters in size, passed about 2 Earth radii (14,000 km) from the Earth's surface Nov. 6 at around 16:30 EST. This is the third-closest known (non-impacting) Earth approach on record for a cataloged asteroid.</div>

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Utah Fireball - 18 November 2009 - 0 views

remanzacco.blogspot.com/...fireball-18-november-2009.html

astronomy fireball utah fireball

shared by Ernesto Guido on 21 Nov 09 - Cached

Ernesto Guido on 21 Nov 09

On Nov. 18, just after midnight local time (MST) a great fireball was seen over parts of the western United States

<div class="cArrow"> </div><div class="cContentInner">On Nov. 18, just after midnight local time (MST) a great fireball was seen over parts of the western United States</div>

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Leonids 2009 - 0 views

remanzacco.blogspot.com/...leonids-2009.html

astronomy leonids meteors