... On September 26, a large solar coronal mass ejection smacked into planet Earth's magnetosphere producing a severe geomagnetic storm and wide spread auroras. ... Cocoon Nebula Wide Field . ... AR 1302 first came around the Sun's edge last week and is so large it can be seen without a telescope. Flying over Planet Earth . ... During 2006, a large solar flare from an Earth-sized sunspot produced a tsunami-type shock wave that was spectacular even for the Sun. ... September s Aurora . ... September . ...

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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2008 September 3 . 31 Million Miles from Planet Earth . ... Still cruising through the solar system, earlier this year the robotic spacecraft looked back to record a series of images of its home world 31 million miles (50 million kilometers) away. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

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• APOD: 2010 September 16 - The Veil Nebula
• APOD: 2010 September 30 - Coreshine from a Dark Cloud
• APOD: November 22, 1996 - Fliers Around the Blue Snowball Nebula

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Space Flight . ... Search Results for ?stellar nursery? Posted on February 21, 2013 | No Comments A new image from the European southern ObservatoryтАЩs Visible and Infrared Survey Telescope for Astronomy €а(VISTA) telescope reveals the glowing clouds of gas and filaments of dust surrounding hot young [ ] . Continue Reading.. Posted on March 2, 2016 | ... Posted on November 12, 2015 | ... Posted on July 28, 2015 | ...

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• Other Galaxies | Astronotes
• Was the 21 September Fireball a Second Moon? | Astronotes
• M78 off Orion: Bladerunner Nebula? | Astronotes

My research efforts have focused on three areas which are: . More than 200 extrasolar planets have been discovered around relatively nearby stars, primarily through the Doppler line shifts owing to the reflex motions of their host stars, and more recently through transits of some planets across the face of the host stars. ... Gravitational microlensing provides a novel technique to look for planets around lens stars, and this is the only technique currently capable of detecting Earth-mass planets. ...

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• HST this week: 266
• STScI Star and Planet Formation Seminar Series
• The Ever-changing Circumstellar Nebula around UW Centauri

... Like a last gasp of breath, Sun-like stars puff away their outer layers of gas at the end of their lives. This gas floats away into space and forms beautiful and striking clouds, which are called planetary nebulae (although they have nothing to do with planets). ... Yet, astronomers looking at 100 planetary nebulae in the bulging centre of our Galaxy, the Milky Way have found that most of the bipolar planetary nebulae in this region are acting in the same, strange, way. ...

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• http://www.eso.org/public/news/eso1205/kids/
• Los Cielos de Am , The darkest sky and the two galactic hemispheres
• ESO - Star and Planet Formation Workshop

... Warped passages: Thursday 16 October 2008 . ... Catch a Falling Star: Thursday 9 October . A stronomy Ireland Colm J. Cannon Memorial lecture: " Searching for Planets Around Other Stars - From Galway " by Gregg Hallinan, at 8 pm, Monday 13 October, in the Physics Building, Trinity College Dublin. ... The techniques used to detect these planets requires the use of very sensitive and expensive equipment. ... Tuesday, 7 October 2008 23:23 . International Year of Astronomy, Ireland National Node . ...

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• Armagh Observatory
• Titania Ireland Mini-Campaign: Information and Documentation
• Armagh Astropark: The Planets

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

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• Extra-solar planets
• The Tarantula Nebula

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The Sun Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic Evolution ... So far, one planet has been studied by this method. ...

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... We still have a long distance to cover before we leave the Milky Way Galaxy -- tens of thousands of lightyears, as a matter of fact -- so let's stop by some interesting objects on the way. ... But we have reached the edge of the Milky Way Galaxy. ... We don't know, but we do know that there are countless voyages left to take. To continue the virtual voyage beyond our galaxy, go to Kent Cheatham's "A Walk in the Stars" at http://www.ionet.net/~cheatham/astro/astrotour.shtml . ...

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• ASP: The Music of the New Spheres?
• ASP: Lord of the Rings
• ASP: A Good Definition of the Word "Planet": Mission Impossible?

... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...

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• Astronomy HyperText Book: Interstellar Medium
• The Three Planet System
• Astronomy Plus CCD Images of Galaxies

... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

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• Would it be possible to find a moon around an extrasolar planet? If so, how? |
• Everything around us is spinning: particles, planets, stars, galaxies. Why not
• Is there evidence of Oort-Cloud-like structures around other stars? |

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

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• Phil Plait's Bad Astronomy: Bad News:
• Phil Plait's Bad Astronomy: Mad Science
• Phil Plait's Bad Astronomy: Misconceptions

... B. Vicini, A. Natta, A. Marconi, L. Testi, D. Hollenbach, B.T. Draine . 1998, A&A, in press . ... 1998, ApJ, in press . ... L. Testi, F. Palla, A. Natta . ... Francesco Palla . 1998, The Physics of Star Formation and Early Stellar Evolution, eds. C.J. Lada and N. Kylafis, in press . ... 1998, in "The Molecular Astrophysics of Stars and Galaxies - A Volume Honouring Alexander Dalgarno", edited by T. W. Hartquist and D. A. Williams, Oxford University Press, in press . ... Star Formation Group . ...

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• Galileo Crosses Boundary Into Jupiter's Environment
• The Planet Jupiter
• Dust evolution across the CO snowline in a protoplanetary disk

... Here is a brief outline of the current theory of the events in the early history of the solar system: . A cloud of interstellar gas and/or dust (the "solar nebula") is disturbed and collapses under its own gravity. ... The gas cools off enough for the metal, rock and (far enough from the forming star) ice to condense out into tiny particles. (i.e. some of the gas turns back into dust). ... Once the larger of these particles get big enough to have a nontrivial gravity, their growth accelerates. ...

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• Chronology of early astronomy,mechanics and spaceflight
• Galileo Crosses Boundary Into Jupiter's Environment
• Saturn [Oulu]

Testing the Automatic Detection of Directly Imaged Exoplanets Using Wavelet Analysis Chris Merchantz Introduction · Challenges associated with direct images of planets Distinguish planets in the following way: (1) a minimum flux threshold is from speckles maxima, anddefined for the features that are identified as local (2) the "Exoplanet Recognition Using a Wavelet Analysis Technique" Fig. ... This spectrum is used as template spectrum to recognize planets in a deep image. ...

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• The AstroStat Slog Blog Archive [ArXiv] 3rd week, Jan. 2008
• Chandra Images for G263.5-02.7
• The AstroStat Slog Blog Archive Is 8-sigma significant enough for you?

Harvest Moon . ... The Harvest Moon refers to the Full Moon that comes closest to the autumnal equinox, or the first day of autumn. Depending on the year, the Harvest Moon can fall anywhere from two weeks before to two weeks after the equinox, which arrives annually on or near September 23. ... It was once common knowledge that at the vicinity of Full Moon, the Moon rises around sunset, shines all night long and sets around sunrise. ... Re-published on Astronomy Net with permission of the author. ...

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• Moon, Planets And Aurora, Oh My! - an Astronomy Net Article
• Pluto Is Not A Planet, But A Moon Of Neptune. - an Astronomy Net God Science
• Astronomy articles, forums, listings, and other resources about Astronomy.

... The first of these, of the HL Tau protoplanetary disc, revealed a striking series of concentric rings but oddly, no spirals, as one might expect if the gaps in the disc are being carved by newborn planets. In this talk I ll show how the rings in HL Tau can be beautifully and convincingly explained as being caused by protoplanets, but only when the interaction between gas and dust in the disc is accounted for. ...

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• University Problem Based Learning Exercises for Teaching Astronomy and Physics
• Mass Feeding and Feedback in Young Stellar Objects
• Paul Francis -- Astronomical Constants

. September 2011 April 2011 March 2011 February 2011 . January 2011 November 2010 April 2010 February 2010 . September 2008 August 2008 May 2008 February 2008 .

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... Go directly to the moons of: . Mercury Venus Mars Jupiter Saturn Uranus Neptune Pluto . Go directly to the surface features of Earth's Moon and Mars . Planet & Moons . Pronunciation . ... Mercury . ... Mars: . 2 moons . ... Jupiter: . ... Neptune: . ... 1 moon . ...

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• Astronomical Glossary - S - Z
• Astronomical Glossary - J thru M

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Information & tools for observers . ... Australia Telescope Online Archive (ATOA) . ... ATCA | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Australia Telescope National Facility Colloquium . ...

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• Orange Meeting 2010
• Research - Compact high-velocity clouds around the Milky Way
• Galaxy Lunch - Dave Lommen speaking on "Probing the first steps of planet