... It's the dim star, not the bright one, near the center of NGC 3132 that created this odd but beautiful planetary nebula. ... Characteristic of large, complex impact craters on the Moon, the central uplift was produced by a rebound of the suddenly molten lunar crust during the violent impact event. ... Saturns Iapetus: Moon with a Strange Surface . ... A strange ridge crosses the moon near the equator, visible near the bottom of the above image, making Iapetus appear similar to the pit of a peach. ...

... 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 . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2004 December 1 . Saturn's Moon Dione from Cassini . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . ... Recent and likely future images of this unusual moon by the robot Cassini spacecraft now orbiting Saturn might help us find out. ... The Cassini spacecraft is scheduled to photograph Dione at higher resolution in mid-December. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

A team of scientists believes they have discovered a chain of impact craters in the central African country of Chad that suggests ancient Earth may have been hit by a large, fragmented comet or asteroid similar to the Shoemaker-Levy 9 comet that slammed into Jupiter in 1994. The craters were discovered in radar images of the Earth taken by the Spaceborne Imaging Radar C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) that flew on the Space Shuttle Endeavour in April and October of 1994. ...

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

... Main . ... Pulsar Emission Mechanisms . ... Distinguished Visitor . PPTA algorithm development . ... Flux variations of PPTA pulsars . Carolyn Raithel (Carleton College) . ... Pulsar Wind Nebluae . ... Nov 1, 2010 - Jan 31, 2011 . ... June 23 - Aug 9, 2010 . ... Dec 8 - 17, 2009 . ... Dec 13 - 23, 2006 . ... Dec 3, 2006 - Jan 5, 2007 . ... Aug 10 - Dec 7, 2006 . ... June 29, 2006 - June 15, 2007 . ... May 15 - June 26, 2006 . ... Dec 31, 2005 - Feb 1, 2006 . ... Group . ... Pulsar Groups . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . ... Space Flight . ... One of the best-known lunar craters, Tycho is not especially large at some 85 km across. ... Bright and with prominent rays of material radiating from it, Tycho is a young crater; there has been little time for the slow and steady rain of micrometeorites to erode it. ... NASAтАЩs LRO recently took this evocative image of the steep slopes of TychoтАЩs central peak illuminated by the morning Sun. ...

The Higgs Boson: Window on the Big Bang, UO, Eugene, Oregon , October 29, 2012 . Physics Slam, UO, Eugene, Oregon , March 22, 2011 . University of New Mexico , October 1, 2009 . Columbia Hall, UO, Eugene, Oregon , September 12, 2008 . ... Eugene Rotary, Eugene, Oregon , February 5, 2008 . ... University of Oregon , May 19, 2005 . ... Particles, Energy, and Cosmology , Jim Brau . ... Annual Star Party - Public Lecture . ... Public Lecture Celebrating the World Year of Physics 2005, . ...

Chain of Impact Craters Suggested by Spaceborne Radar Images . ... A team of scientists believes they have discovered a chain of impact craters in the central African country of Chad that suggests ancient Earth may have been hit by a large, fragmented comet or asteroid similar to the Shoemaker-Levy 9 comet that slammed into Jupiter in 1994. ... The Spaceborne Imaging Radar project is managed by the Jet Propulsion Laboratory for NASA's Office of Mission to Planet Earth, Washington, DC. ...

. Date, from: . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 January February March April May June July August September October November December 1952 1953 1954 1955 1956 . to: . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 January February March April May June July August September October November December 1952 1953 1954 1955 1956 . Longitude, from: . to: . Latitude, from: . to: . Area, from: . to: . Brightness, from: . to: .

... January . February . March . April . ... November . December . ... April ((April Fools)) . ... April (Star Party Reports) . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Past weeks: . June 25 - July 1, 2007 . July 2 - July 8, 2007 . ... July 30 - August 5, 2007 . ... November 26 - December 2, 2007 . December 3 - December 9, 2007 . ... December 3, 2007 - January 6, 2008 . ... February 25 - March 2, 2008 . March 3 - March 9, 2008 . ... March 31 - April 6, 2008 . April 7 - April 13, 2008 . ... May 5 - May 11, 2008 . ... July 7 - July 13, 2008 . ... December 1 - December 7, 2008 . ... December 29, 2008 - January 4, 2009 . ... March 30 - April 5, 2009 . ...

Analysis of Observations of Earth Impact Object 2008 TC3 . ... Central (Pulkovo) Astronomical Observatory of RAS, St. Petersburg, Russia Abstract: . On-line astrometric and photometric observations of asteroid 2008 TC3 , discovered 19 hours before its impact on Earth [1], were carried out with the mirror astrograph ZA-320 пњ at Pulkovo observatory at night of 7 th October, 2009. ... Results of analysis of the of 837 observations taken at 26 observatories worldwide are presented. ...

... Home Lectures Lecture Series 2015-2016 . ... Lecture Series 2014-2015 . ... Beyond New York City . ... The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the public. ... Amateur Astronomer Association is pleased to announce we will be offering select, limited reserved seating for current AAA members for the Friday, January 8, 2015 AAA Lecture entitled Robert Nemiroff ?2015 Astronomy Picture of the Day?. ...

... Phase Correction Algorithms | ... R. Bolton, B. Nikolic, J. Richer, The Power Spectrum of Atmospheric Path Fluctuations at the ALMA Site from Water Vapour Radiometer Observations , ALMA Memo 592, PDF , ALMA Memo series entry . Emily I. Curtis, Bojan Nikolic, John S. Richer and Juan R. Pardo, Atmospheric dispersion and the implications for phase calibration , ALMA Memo 590. ... B. Nikolic, ALMA Phase Calibration/Correction , Presented at Algorithms 2008 Workshop, Oxford, December 2008. pdf . ...

Russian . Main . News . ... Minutes of the Telecon on January 17, 2012. ... News of the RadioAstron mission on the Lavochkin Association site up to September 15, 2011 (in Russian). News of the RadioAstron mission up to September 3, 2011. News of the RadioAstron mission on the Lavochkin Association site (in Russian). News of the RadioAstron mission up to August 18, 2011. ... Second version of the RadioAstron Mission Operations Handbook ( in Russian )is placed on the project site . ...

Statistics of sunspot activity . The sunspot indices . ... NGDC's observations . The solar regions . ... Average annual indices . ... October . ... October, 2013 . Visual indices of solar activity by National Geophysical Data Center . ... Average . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...

. Mercury, November/December 2003 Table of Contents .