... A Dark and Stormy Night . ... But on August 29th the red planet Mars, near it's closest approach to Earth in almost 60,000 years, shone brightly in the sky against a background of stars in the constellation Aquarius. ... A Powerful Solar Flare . ... Yesterday, our Sun produced one of the most powerful solar flares in recorded history. ... Awash in a sea of plasma and anchored in magnetic fields, sunspots are planet-sized, dark islands in the solar photosphere, the bright surface of the Sun. ...

... 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 . ...

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 . ...

... 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 . ...

... Armagh Planetarium . ... Universe . ... Posted on October 1, 2010 | ... Before the modern era of technological astronomy, to know anything [ ] . Continue Reading.. ... 2 Comments In, say 1975, there was only one kind of ?stuff? in the Universe, matter made of protons and neutrons. ... Newer Entries . Hello, IтАЩm Colin, welcoming you to Astronotes, the PlanetariumтАЩs official blog. Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

... 2003 October 25 . Islands in the Photosphere . Credit Copyright: Gunther Groenez . Explanation: Awash in a sea of plasma and anchored in magnetic fields , sunspots are planet-sized, dark islands in the solar photosphere , the bright surface of the Sun. Before the enlightened(!) age of cameras, solar observers created detailed drawings of sunspots as they changed and progressed across the visible solar disk. ... About APOD | ... NASA Web Site Statements, Warnings, and Disclaimers . ...

BaBar Collaboration Meeting , December 6-10, 2004 . ... APS April Meeting 2004 , May 1-4, 2004 . ... Workshops in Particle Physics , February 29 - March 6, 2004 . ... Aspen 2004 Winter Conference on Particle Physics , February 1-7, 2004 . ... Exp Talks - Prior Years . ... Energy Spectrometer Designs and Beam Tests , Eric Torrence . ... Recent Results from the LIGO Experiment, Isabel Leonor . ... Experimental Introduction , Ray Frey . ... CCD R at Oregon University , Nick Sinev, Olya Igonkina . ...

... Home Observing Solar Bridge Across New York Harbor . ... Clear Sky Chart . This Month's Sky . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... Get on board with the Amateurs Astronomers Association, Sunday, September 20th, 2015 . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... News Feed . ... 2013 December 5th . ... Minutes of the 89th meeting of the Management Committee of the Armagh Observatory and Planetarium 21 JUNE 2013 - PDF . ... Warm, Wet and Bright October . ... AOP Annual Report and Accounts for the year ended 31 March 2013 - PDF . ... Armagh Observatory Planetarium тАУ Appointment of Members to the Management Committee - PDF . ... Armagh Observatory Annual Report 2012 - PDF . ...

Program Id: . ... UTC End Time: . Astronomer/PI Name(s): . ... Observer Name(s): . Nightlog Day: Sunday Monday Tuesday Wednesday Thursday Friday Saturday Month: January Febuary March April May June July August September October November December Day (DD): Year (YYYY): Full Night A (First half) B (Second half) Special Schedule . ... Note: Open this weather logfile program in another browser window. Please copy and past the resultant info below at the end of the night) . ...

NGC 2903 Drift Observations . Observer's Log . Please have a terminal window open as user NGC 2903. ... Select today's date: day 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 Month January February March April May June July August September October November December Year 2004 2005 . ... Write your comments about today's run, problems, RFI, etc.. ... To submit these entries, please type the last four . ... Last Update: December 4, 2004 . ...

The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... That produces an extra resistance to the flow of current. ...

... Telescopes . ... The International Conference "Dark Ages and White Nights (Spectroscopy of the CMB)" (June 20-24, 2016) . ... The International Conference "Stars: from collapse to collapse" (October 3-7, 2016) . The traditional annual competition conference of scientific and scientific-engineering papers of the Observatory staff members . ... A session of the Dissertation Council (October 16, 2015) . ... International scientific conference "Large Optical Telescopes" (October, 10-13, 2011) . ...

... Magnetic Storms . ... Cosmic Rays . ... Energetic Particles . ... Solar fast Particles . We cannot observe the way the distant universe accelerates cosmic rays or produces energetic photons, but acceleration processes also occur on our Sun , though on a much more moderate scale. ... That is why such events are often missed by cosmic ray detectors near the equator, where the lowest energies are excluded by the Earth's magnetic field. ... Should we be concerned about solar energetic radiation? ...

... Science . ... Science Users Information > Science Publications > Archive of the ESO Enews . ... Phase 1 Proposals . ... Data Handling and Products . ... Science Archive Facility . ... ESO Data Access Policy . ... Call for Public Surveys with the Arizona Radio Observatory . ... ESO Science Newsletter . ... Archive ESO Enews . ... Please find below an overview of the available issues of the ESO Electronic Newsletter. ... THIRD AND FINAL CALL FOR ESO/GTC PROPOSALS . ... NEW ESO ARCHIVE DATA RELEASES . ...

... Galileo Probe . The Galileo spacecraft was designed to study Jupiter's atmosphere, satellites, and surrounding magnetosphere for two years. ... From there, Galileo will spend more than five years traveling to Jupiter, where it will become the first spacecraft to make direct measurements from an instrumented probe within Jupiter's atmosphere. ... This image, taken by the Hubble Space Telescope, shows the predicted site at which the Galileo Probe will enter Jupiter's atmosphere on December 7, 1995. ...

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 . ...

. 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: .

... Telescope . ... 2002B , 2003A , 2003B , 2004A , 2004B , 2005A , 2005B , 2006A , 2006B , 2007A , 2007B , 2008A , 2008B , 2009A , 2009B , 2010A , 2010B , 2011A , 2011B , 2012A , 2012B , 2013A , 2013B , 2014A , 2014B 2015A . ... 2003B . ... IKI . ... High Energy Astrophysics Department 2016 IKI RAN ...

... Sun images . ... Sun flares . ... Active areas . October : 2009 . ... No sunspots and sunspot groups can be currently observed on the Sun's surface . No H-alpha plages without spots can be currently observed on the Sun's surface . Last updated: October 10, 2009 00:00 UT . ... 1953-2016 Laboratory of X-ray astronomy of the Sun, LPI RAS, Russia . ... 7(499)132-65-96, Fax: +7(499)132-65-97 . ...