Astronomy Picture of the Day . Centaurus A: X Rays from an Active Galaxy . ... CXO , NASA Explanation: Its core hidden from optical view by a thick lane of dust, the giant elliptical galaxy Centaurus A was among the first objects observed by the orbiting Chandra X-ray Observatory . ... Publications with keywords: active galaxy - X-ray - NGC 5128 - Centaurus A . Publications with words: active galaxy - X-ray - NGC 5128 - Centaurus A . ... X Ray Stars of Orion . ... Jumbled Galaxy Centaurus A . ...

... and visitors enjoying the 3-D views of the Sun . at the Royal Society Summer Science Exhibition in July 2007. The Armagh Observatory is providing a special Living with a Star exhibition at the Armagh Planetarium, from Tuesday 18 to Saturday 22 September. ... It presents amazing 3-D images and movies of the Sun, our nearest star, as well as hands-on material to illustrate magnetic fields and ultraviolet light, and an interactive slide show and live images of the Sun. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Space Flight . ... Science Fiction . UFOs and Fringe Science . ... This close-up look at Comet ISON (C/2012 S1) is from NASAтАЩs Hubble Space Telescope. This image was captured on 10 April 2013, when the comet was at a distance of 386 million miles (slightly further than Jupiter) from the Sun. ... Image credit: NASA, ESA, J.-Y. Li (Planetary Science Institute), and the Hubble Comet ISON Imaging Science Team) . ...

... 2001 August 16 . Centaurus A: X-Rays from an Active Galaxy . ... CXO , NASA . ... Astronomers were not disappointed, as Centaurus A's appearance in x-rays makes its classification as an active galaxy easy to appreciate. ... Blasting toward the upper left corner of the picture, the jet seems to arise from the galaxy's bright central x-ray source -- suspected of harboring a black hole with a million or so times the mass of the Sun. ... About APOD | ... NASA Technical Rep.: ...

... ESO PR Photo 07a/01 . ... ESO PR Photo 07b/01 . ... Caption : PR Photo 07a/01 shows Comet Hale-Bopp , still active at a distance of nearly 2,000 million kilometres from the Sun. ... This is quite unusual for a comet and is clearly confirmed on the present photo ( PR Photo 07a/01 ) from the WFI camera on the MPG/ESO 2.2-m telescope at La Silla, obtained a few days ago. ... ESO-Chile . ... ESO PR Photos 07a-b/01 may be reproduced, if credit is given to the European Southern Observatory (ESO). ...

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Black holes . ... Black holes are objects for which the gravitational attraction is so strong that nothing, not even light, can escape from it. ... The material inside a black hole is concentrated into a singularity: a single point of infinitely high density where space and time are infinitely distorted. ... The existence of such black holes has been inferred in cases where the black hole pulls gas of a companion star that orbits around it. ... Gravity's Fatal Atraction: Black Holes in The Universe. ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Orientation and Evolutionary Effects in Active Galactic Nuclei . ... In this invited review, I present observational results of Active Galactic Nuclei that my colleagues and I have recently obtained. ...

The McDonald 30-inch Prime Focus camera (f/2.98) uses a thick, front-side illuminated Loral-Fairchild 2048x2048 CCD with a Metachrome II coating. ... Hence, placing a 2048x2048 CCD at the Prime Focus would result in an angular field of view of approximately 1 square degree. ... These kinds of galaxies, previously unknown, represent a new population of objects that has recently been discovered by members of our team (see May 1994 issue of Discover magazine) using wide field CCD imaging techniques. ...

... May 15, 1998 . TRACE and the Active Sun . Credit: Courtesy CFA , TRACE Team , NASA . ... It shows graceful arcs of intensely hot gas suspended in powerful looping magnetic fields which soar above a solar active region. ... By operating the TRACE instruments during the Sun's increasingly active phase, scientists hope to explore the connections between complex solar magnetic fields and potentially hazardous solar erupt