Unlike the other small bodies in the solar system, comets have been known since antiquity. ... As of 1995, 878 comets have been cataloged and their orbits at least roughly calculated. ... When they are near the Sun and active, comets have several distinct parts: . ... A comet whose orbit takes it near the Sun is also likely to either impact one of the planets or the Sun or to be ejected out of the solar system by a close encounter (esp. with Jupiter). ... more comet images . ... HST images . ...

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• APOD: March 25, 1996 - Comet Hyakutake Passes the Earth
• APOD: November 8, 1998 - Leonid Meteor Shower Next Week
• APOD: October 21, 1996 - Orionids Meteor Shower to Peak Tonight

... The awsome spectacle of a brilliant comet, with its long ghostly tail streaming behind it, is a rare event. ... Only one other comet, Comet Halley, was seen so far from the Sun, giving scientists an opportunity to watch it as it slowly warmed up and sprouted a tail. ... Comets are the Rip Van Winkles of the solar system -- mini-worlds that have changed little during their 4.5-billion-year nap far from the Sun. ... Observing Comets . ... Once, comets inhabited the entire solar system. ...

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• ASP: The Comet About to Smash into Jupiter

... McCollough's MPEG Movie of Comet Hyakutake taken March 23 Explanation: This picture of Comet Hyakutake taken the night of March 21/22 in Illinois, USA shows the enormous tail that has already developed. ... As the comet moves into the inner Solar System , it will pass the Earth at about 40 times the distance of our Moon . ... Latest Comet Hyakutake images: JPL , Crni Vrh Observatory, Slovenia , Fayetteville Observer-Times , NASA's Night of the Comet . ... Publications with keywords: comet Hyakutake ...

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• Астронет > Comet Hyakutake Passes the Earth
• XWare > APOD

Armagh Observatory, 13 November 2001: . The Leonid meteors, or shooting stars, are produced by debris from comet Tempel-Tuttle . ... Leonid Dust Trails . This year, however, according to calculations by Armagh Observatory astronomer Dr David Asher , the Leonid meteor shower will be exceptional in having several storm-level peaks on Sunday, 18th November superposed on the normal background level of activity. ... Leonid Dust Trail Theories (PDF Format) by David Asher . ...

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• Meteor showers at Mars
• Taurid Complex
• Armagh Observatory

This is a copy of a Press Release from E.S.O. Eight years after the passage of Comet Halley in early 1986, astronomers at the European Southern Observatory have succeeded in obtaining an image of this famous object at a distance of no less than 2,820 million km from the Sun. ... The image shows the 6 x 15 km avocado-shaped nucleus as an extremely faint point of light without any surrounding dust cloud. ... This observation was made with the ESO 3.58 metre New Technology Telescope (NTT). ...

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• Visiting with an Old and Active Friend (ESO PR Photos 07a-b/01)
• Rapid Changes in the Inner Coma of Comet Hyakutake

... Meteors and Meteorites . ... By admin August 2, 2011 Posted in: August . 13 August 2009: A perseid flashes through the sky (Image credit: Andreas M†ґller via wikimedia.org) . ... Not all meteors are sporadic events, the regular meteor showers occur when the Earth bulldozes through a great swarm of meteoroids drifting in orbit round the Sun. ... They are at their best in the pre-dawn hours, as the face of the Earth turning towards the Sun catches more meteors as the Earth moves through space. ...

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• Leonid meteors 2011 | Astronotes
• Comet ISON Puts on a Show for Hubble | Astronotes
• Stargazing in May | Astronotes

... Comet Animation . ... Comet structures are diverse and very dynamic, but they all develop a surrounding cloud of diffuse material, called a coma, that usually grows in size and brightness as the comet approaches the Sun. ... As comets approach the Sun they develop enormous tails of luminous material that extend for millions of kilometers from the head, away from the Sun. ... The evaporated molecules boil off and carry small solid particles with them, forming the comet's coma of gas and dust. ...

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• Solar System Extrema
• Mars' Moon Phobos
• Kuiper-Oort

... An artificial comet holds secrets to Earths life . ... Supernova showered Earth with radioactive debris . ... Get to Know the Night Sky . ... What is the chance that Earth could pass through the debris field of Comet ISON (C/2012 S1) and get a meteor shower? ... RELATED TOPICS: COMET ISON | COMETS | ... Earth already has passed through Comet ISON s debris field which occurred around January 12, 2014 but no one detected a meteor shower. ... Get instant access to subscriber content on Astronomy.com! ...

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• How massive must a colliding body be to disturb Earth's orbit? | Astronomy.com
• Photo from NASA Mars Orbiter shows wind's handiwork | Astronomy.com
• What would cause Earthт??s orbit to become more circular instead of its present

Halley's Comet . Spacecraft that have visited Halley's Comet . ... Then in 1984 and 1985, five spacecraft from the USSR, Japan and Europe were launched to make a rendezvous with Halley's Comet in 1986. ... This image is a mosaic of 8 images taken by the Giotto spacecraft during the Halley encounter on March 13, 1986. ... Courtesy NASA/JPL) . ... Halley's Comets in 1986 . This image of Halley's Comets was taken during its 1986 appearance. ... Cylindrical Map of the Nucleus of Comet Halley . ...

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• Mars' Moon Phobos
• Thought-Provoking Imagery Shows Sun's Place in the Galaxy
• APOD: June 28, 1998 - Comet Hale Bopp Over Val Parola Pass

Here we have an images of Comet C/1998 U5 (LINEAR) passing NGC 7080 showing SN 1998ey on Dec.12 only a week after Ron Arbour discovered the SN. Jack was unaware that it was over the galaxy let alone that it showed the SN! . Image by Jack Schmidling . For more informat on comets, check the Comet chasing . Back to 1998ey . Back to 1998 Supernovae . Back to Bright Supernovae David Bishop Last modified: Wed Jul 18 12:47:37 EDT 2001

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In Searching for Comet P/Tunguska-1908 . ... It finds explanation, however, in the New Explosive Cosmogony of minor bodies as having been caused by an explosion of a part ( up to 10 12 g) of the comet nucleus whose ices contained products of their electrolysis, 2H 2 + O 2 . ... Back integration of its orbit without allowing for non-gravitational effects suggests that it had passed the Earth on June 27, 1908 at a distance of 0.0659 AU. ...

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... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

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• Angular Speeds Of Meteor Showers - an Astronomy Net General Forum Message

Conserved quantities. Energy, momentum, & angular momentum. ... To start with, let us look at a plot of Specific Angular Momentum versus Specific Energy for every historical comet apparition up to 1995. ... Where do asteroids fit in? ... Why do the points of one cluster group around a vertical line? ... h = angular momentum per unit mass of an orbiting body. ... Lines of constant angular momentum are "1/X" functions on a q vs (1+e) graph, but a little more complex if drawn on the above graph. ...

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• Observation Opportunities During Leonid Shower
• Conservation Laws, Orbital Parameters, and Solar System Bodies
• Ghost Images

Near-Earth Asteroids and the Arecibo Observatory Radar The Arecibo Observatory radar is the world's most powerful instrument for post-discovery characterization and orbital refinement of near-Earth asteroids. Arecibo radar observations are critical for identifying asteroids that might be on collision course with Earth and, if necessary, preventing a collision. ... A model of the primary component of asteroid 1999 KW4, derived from radar data. ...

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• Asteroid 1998 QE2 and Moon Safely Pass Earth
• check lbw filter bank
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... About meteorites . ... Meteorite Dronino . ... New iron meteorite shower found! Meteorite Encyclopedia . ... About laboratory . ... Dronino iron meteorite . ... Mr. Gus'kov felt that further efforts by Milanovsky were likely to be unsuccessful, so he searched further and found our Meteorites Laboratory. The Laboratory's analysis showed that the Dronino Iron has a meteorite origin. ... Dronino is the 111th meteorite and only the third iron-meteorite shower found in Russia in the last 250 years. ...

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Vega Stamps . International project VEGA was managed by Space Research Institute (IKI) . ... VEGA-1 and VEGA-2 spacecraft were developed by Babakin Space Center and fabricated by Lavochkin Association in Khimki, Moscow region. ... VEGA-1 and VEGA-2 have been the part of the international fleet to Halley's comet, that also included Giotto mission of European Space Agency (ESA) and Sakigake and Suisei by Institute of Space and Aeronautical Science (ISAS) of Japan. ... Vega 1 . ...

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• Mars96
• Close-up of the Aurora
• Space Research Institute (IKI) Seminar

... Command Syntax . AGL (Astronet Graphic Library) . ... SET/GRAPHIC and SHOW/GRAPHIC . ... MIDAS And the . ... Command Syntax , Catalogs in MIDAS , Using Catalogs in . ... Command Line Editing . ... Command Line Suspension . ... Command Syntax , MIDAS Command Language . ... Command Syntax , Symbol Substitution in . ... Specifying Keywords , Command Syntax , Symbol Substitution in . ... Command Syntax , Execution of Commands . ... MIDAS Command Language . ... Command Syntax , Running a Program . ...

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• Packing Demonstration Program
• Progress Bars
• SET/GRAPHIC and SHOW/GRAPHIC

... Bad Astronomy . ... Bitesize Astronomy . ... Site Info . ... NEW: see the Leonids LIVE! ... I have added a list of live webcasts that will let people all over the Earth see what the shower is doing from the points which may get the predicted max from the meteors. ... A dark site is best, but Leonids are known for fast bright meteors, so even a bright sky is not so bad. ... Here is a list of web sites that will be broadcasting the Leonids live over the web. ... Leonids Live! ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Misconceptions: James McCanney's Nonsense
• Phil Plait's Bad Astronomy: Bad TV
• Phil Plait's Bad Astronomy: Misconceptions

КОСМИЧЕСКИЙ КАЛЕНДАРЬ ЯНВАРЯ 2000 ГОДА . ... Jan 01 - Year 2000 . Jan ?? ... Jan 01 - Asteroid 1996 AX1 Closest Approach To Earth (0.702 AU) . ... Jan 03 - Asteroid 3745 Petaev Closest Approach To Earth (1.862 AU) . ... Jan 05 - Asteroid 1999 VO11 Near-Earth Flyby (0.218 AU) . ... Jan 08 - Comet P/1998 VS24 (LINEAR) Closest Approach To Earth (2.915 AU) . ... Jan 12 -[Image][Dec 02] Asteroid 1999 WA2 Closest Approach To Earth (1.100 AU) . ... Jan 14 - Mercury Occults 53 Sgr (6.9 Magnitude Star) . ...

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The small solids. Asteroids or the small planetes . ... The comets. ... Ceneca the Young.Procuring about the nature.63 y. The comet is a celestial body of a great size, but a rare one... transparent. Sometimes there seen a core and the medium forms a kind of a tail, beard or dishevelled looks. ... The core is an ice body - conglomeration of frosted gas and dust. ... The comet state is variable: ones have the con tails, others the dust tails, and the third have both. ... Meteors and meteorites. ...

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• Laplase