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Astronomy & Astrophysics (A&A)

Astronomy & Astrophysics (A&A)
Free access Herschel: the first science highlights The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory A. Poglitsch, C. Waelkens, N.

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Picture of the Week In this new Hubble image, we can see an almost face-on view of the galaxy NGC 1084. At first glance, this galaxy is pretty unoriginal. Like the majority of galaxies that we observe it is a spiral galaxy, and, as with about half of all spirals, it has no bar running through its loosely wound arms. However, although it may seem unremarkable on paper, NGC 1084 is actually a near-perfect example of this type of galaxy — and Hubble has a near-perfect view of it. About the Kavli Prize “The Kavli Prizes recognize three scientific areas we believe are exceptionally exciting in the 21st Century and at the brink of remarkable discoveries – astrophysics, nanoscience and neuroscience. Created to honor, support and recognize scientists whose work have had a profound impact in these areas, through these Prizes we also hope to raise people's awareness of the benefits of basic science in their own lives.

How to... photo guides : Astronomy Photographer of the Year : Exhibitions : What's on Longing to become an astrophotographer but unsure how it's done and what equipment you need? Already taking pictures of the night sky but looking for some tips and advice? On these pages you’ll find videos from some of the winners of the competition explaining how they got their shot, as well as step-by-step guides from members of our Astronomy Photographer of the Year Flickr group on how to get great results, from getting the right gear through to processing. Download the guides as PDFs: aurora | comets | deep space | the Moon | star trails The Day the Earth Smiled On July 19, 2013, in an event celebrated the world over, NASA's Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings -- and, in the background, our home planet, Earth. With the sun's powerful and potentially damaging rays eclipsed by Saturn itself, Cassini's onboard cameras were able to take advantage of this unique viewing geometry. They acquired a panoramic mosaic of the Saturn system that allows scientists to see details in the rings and throughout the system as they are backlit by the sun. This mosaic is special as it marks the third time our home planet was imaged from the outer solar system; the second time it was imaged by Cassini from Saturn's orbit; and the first time ever that inhabitants of Earth were made aware in advance that their photo would be taken from such a great distance. This image spans about 404,880 miles (651,591 kilometers) across.

Supernova in Messier 82 discovered by UCL students Updated 23 Jan 2014 - 9:30am Students and staff at UCL’s teaching observatory, the University of London Observatory, have spotted one of the closest supernova to Earth in recent decades. At 19:20 GMT on 21 January, a team of students – Ben Cooke, Tom Wright, Matthew Wilde and Guy Pollack – assisted by Dr Steve Fossey, spotted the exploding star in nearby galaxy Messier 82 (the Cigar Galaxy). The discovery was a fluke – a 10 minute telescope workshop for undergraduate students that led to a global scramble to acquire confirming images and spectra of a supernova in one of the most unusual and interesting of our near-neighbour galaxies. The supernova in M 82 Asteroid spectral types Asteroids are assigned a type based on spectral shape, color, and sometimes albedo. These types are thought to correspond to an asteroid's surface composition. For small bodies that are not internally differentiated, the surface and internal compositions are presumably similar, while large bodies such as 1 Ceres and 4 Vesta are known to have internal structure. A list of types can be found at asteroid spectral classes. Present-day classifications[edit]

2012 - 10 - Meet ESA, the space agency for Europe Meet ESA, the space agency for Europe 4.88 /5 ( 57 votes cast) Rate this Video The Universe is Alive “Night, when words fade and things come alive. When the destructive analysis of day is done, and all that is truly important becomes whole and sound again.” -Antoine de Saint-Exupery When you look out into the Universe, what is it that you typically think of? Do you think of reliable, fixed stars and constellations? The vast expanse of the Milky Way, with its memorable dust lanes and amorphous shapes?

Planetary and Lunar Coordinates Description: The latest edition of a continuing series covers the period 2001 to 2020. This book provides low to medium-precision positions of the Sun, Moon and planets for the purpose of planning observations. It also includes information on the elongation and magnitudes of the planets, eclipses, moon phases and a wide variety of astronomical phenomena. The eclipse section has been enhanced to present the data for both solar and lunar eclipses in graphical form. There are two versions of this publication. The Planet's Most Powerful Digital Camera Captures Its First Images of the Universe - Megan Garber The device could help astronomers figure out why the expansion of the universe is accelerating. Zoomed-in image from the Dark Energy Camera of the center of the globular star cluster 47 Tucanae, which lies about 17,000 light years from Earth (Dark Energy Survey Collaboration) The Dark Energy Camera is the world's most powerful digital camera. About the size of a phone booth and boasting 570 megapixels, the device took eight years to construct -- by astronomers, technicians, and engineers collaborating across three continents -- and is currently mounted to the Blanco telescope in Chile. From that perch, it is able to observe light from over 100,000 galaxies.

The Elegant Universe: Series ... The Elegant Universe: Part 3 PBS Airdate: November 4, 2003 NARRATOR: Now, on NOVA, take a thrill ride into a world stranger than science fiction, where you play the game by breaking some rules, where a new view of the universe pushes you beyond the limits of your wildest imagination. This is the world of "string theory," a way of describing every force and all matter from an atom to earth, to the end of the galaxies—from the birth of time to its final tick, in a single theory, a "Theory of Everything." Our guide to this brave new world is Brian Greene, the bestselling author and physicist.

Hubble telescope takes stunning new nebula photo for 23rd birthday This new Hubble image, captured and released to celebrate the telescopeâ ESA, and the Hubble Heritage Team (AURA/STScI),NASA NASA's Hubble Space Telescope has snapped a spectacular new image of an iconic nebula to celebrate its 23 years of peering deep into the heavens. The Hubble observatory, which launched on April 24, 1990, captured the Horsehead Nebula in infrared light, peering through obscuring veils of dust to reveal the object's hidden features.

Certaines sections (letters, atomic ; molecular and nuclear data ; astronomical instruments ; catalog and data) sont en accès libre, quelque soit l'année de parution. Tous les articles de plus d'un an (à ce jour jusqu'à janvier 2013 vol.549) sont en accès libre Sauf exception les articles plus récents (12 derniers mois) sont payants by astro_drillaudweb Jan 22