... The Crown of the Sun . ... During a total solar eclipse, the Sun's extensive outer atmosphere or corona is an awesome and inspirational sight. ... A Total Solar Eclipse over Turkey . ... The above digital mosaic caught the Moon in several stages as it moved between the Earth and the Sun. Stars and Dust Across Corona Australis . ... In fact, from its vantage point 150 million kilometers sunward of planet Earth, SOHO's cameras can always monitor the Sun's outer atmosphere, or corona. ...

... On the morning of Thursday, 26 February, amid the Gal pagos Islands, the Sun will fade from view. Not the culmination of ancient prophecy, but none less mystical, Earth's small Moon will be executing a slow slide past the enormous Sun. ... And anyone living in southern North America, Central America, northern South America, or on islands and cruise ships in the Caribbean Sea will, weather permitting, have the opportunity to experience the wonder of a solar eclipse. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2014 February 17 . The Cosmic Web of the Tarantula Nebula . ... Were it placed at the distance of Milky Way's Orion Nebula , only 1,500 light-years distant and the nearest stellar nursery to Earth, it would appear to cover about 30 degrees (60 full moons ) on the sky. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... Astronomy for Kids . ... Cassini spies bright Venus from Saturn orbit . ... Peering over the shoulder of giant Saturn, through its rings, and across interplanetary space, NASA's Cassini spacecraft spies the bright, cloudy terrestrial planet, Venus. ... A distant world gleaming in sunlight, Earth's twin planet, Venus, shines like a bright beacon in images taken by NASA's Cassini spacecraft in orbit around Saturn. ...

... Armagh Planetarium . ... Universe . ... 1 Comment In July 2015, we will finally have our long-awaited closeup views of the dwarf planet Pluto and its moons when NASA?s New Horizons probe flies past the tiny and distant [ ] . ... No Comments As everyone knows on Friday 20 March 2015, a total solar eclipse will occur across the far northern regions of Europe and the Arctic. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

ECLIPSES, TRANSITS OF MERCURY AND VENUS . Year 1999 . Year 2000 . Year 2001 . Year 2002 . Year 2003 . Year 2004 . Year 2005 . ... Total solar eclipse . ... Transit of Mercury across the solar disk . ... Total lunar eclipse . ... Partial solar eclipse . ... Partial lunar eclipse . ... Annular solar eclipse . ... Penumbral lunar eclipse . ... big map . ... Transit of Venus across the solar disk . ... Annular-total solar eclipse . ... Non-central annular solar eclipse . ...

Sky watchers will witness a total lunar eclipse in the early hours of Thursday 21st February, subject to weather conditions. For a total lunar eclipse to occur, the Moon in its orbit around the Earth must pass fully into the cone-shaped shadow of the Earth in space. ... The Moon does not usually go completely dark because the Earth's atmosphere refracts direct sunlight around the edge of the shadow on to the Moon's surface. This causes the Moon to turn a dark, blood-red or copper colour. ...

... When two stars are born together they fall into orbit around each other, creating what we call a binary system . ... An eclipse is when the light from one object is blocked by another object. ... So, for years now astronomers have confidently believed that a dark object known as a brown dwarf star was lurking, hidden within this binary system. ... The new images of the binary system are so accurate that they would have been able to reveal a brown dwarf 70 000 times fainter than the central star! ...

On Thursday, 1998 February 26, a total eclipse of the Sun was visible from within a narrow corridor traversing the Western Hemisphere. The totality path (or path of the Moon's umbral shadow) began in the Pacific, continued through northern South America and the Caribbean Sea, and ended at sunset off the Atlantic coast of Africa. ... Some of the best placed sites along the totality path were in Venezuela. ... Exposure time was 1/2 second. At this location totality lasted 3min 36sec. ...

... The Russian TESIS (FIAN) Solar Observatory has transmitted observations back to Earth of the solar eclipse made on July 22nd, 2009. ... On the first occasion, the satellite passed through the eclipse area at 04:30 Moscow time, making it the first on our planet to see the shadow of the Moon, which was still in space and was only approaching the Earth ( film 1.2 MB, wmv format ). ... The first Moon passage over the solar disk (00:30 UT) (Movie wmv; 1.2 MB) . ...

Instrument Science Report FGS 2005-01 The FGS Astrometry in the Feb 2005 On-orbit Two Gyro Mode Test E. Nelan August 17, 2005 A BSTRACT FGS1r Astrometry was tested under the Two-Gyro Mode (TGM) pointing control law during the February 2005 on-orbit test. ... In each of these orbits the visit contained a single (long) exposure that observed the visit's particular target star for the remainder of the visibility period. ... Visit 02: Visit 02 employed a bright (V=9.9) dominant guide star. ...

... Home Education Classes AAA Spring Astronomy Class: The Physics of Astronomy тАУ February ? March 2016 . ... Classes . ... AAA Spring Astronomy Class: The Physics of Astronomy тАУ February - March 2016 . ... This MonthтАЩs Sky тАУ March 2016 . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Pluto's orbit is also highly inclined -- tilted 17 degrees to the orbital plane of the other planets. ... Ground-based observations indicate that Pluto's surface is covered with methane ice and that there is a thin atmosphere that might freeze and fall to the surface as the planet moves away from the Sun. ... This is the first image-based surface map of the solar system's most remote planet, Pluto. ... This is the first surface map of Charon, the moon of the solar system's most remote planet, Pluto....

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... 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? ...

... Eclipses of the Moon in 2009 : . In 2009 there are four eclipses of the Moon (tree penumbral eclipses on February 9, July 7, and August 5-6 and a partial eclipse on December 31). ... Moon enters penumbra (P 1 ) . ... Moon leaves penumbra (P 4 ) . ... Eclipse, lunar : . ... It may be total (the Moon passing completely through the Earth's umbra ), partial (the Moon passing partially through the Earth's umbra at maximum eclipse), or penumbral (the Moon passing only through the Earth's penumbra ). ...

... Bad Astronomy . ... This first Snack of the year 2000 (yes, I am one of those who says the Millennium begins in 2001) will talk a little about a wonderful event: a total lunar eclipse. On the evening of Thursday, January 20 (or the early morning Friday, January 21 if you lives east of England) the Moon will go undergo one of the best eclipses it can. ... The Moon stays in the Earth's shadow in a lunar eclipse longer the Earth stays in the Moon's shadow during a solar eclipse. ... 2008 Phil Plait. ...

Having studied the solar corona and its radio emissions sunspot cycles ago, I was keen to verify its existence optically during the total solar eclipse of Wednesday, 4 December 2002, the first on Australian soil since 1976. The moon's shadow was to travel from the south-Atlantic west of The Congo, across southern Africa, the Indian Ocean and into the Great Australian Bight, finally making Australian landfall at Ceduna, South Australia (SA). ... The favoured site to observe the eclipse was Ceduna. ...

Coronal "hole" on the Sun . ... As a result of the observations of solar eclipse on February 15, 1961 at wavelength 21 cm the lower brightness region of corona was discovered (detail N5 on figure 1) and it's location on east nimbus of the Sun was determined (figure 2). ... Subsegently such phenomena were named "Coronal Holes". Figure 1. ... The detail N5 is Coronal Hole. ... The location on disk of the Sun radiation details of corona at wavelength 21 cm. ...

... Calibration and analysis of this observation posed very interesting challenges for the authors, in particular dealing with an exciting new instrument whose on-orbit calibration was not yet well defined. ... Five mosaic positions were observed during five consecutive orbits as well as observations for dark and flat calibration. ... Darks and flats had to be created from contemporaneous reference observations and problems within the calibration process had to be resolved. ...