Astronomy Picture of the Day . SN 1006: Historys Brightest Supernova . ... 17.03.2003 . ... AURA , NOAO , NSF Explanation: Suddenly, in the year 1006 AD, a new star appeared in the sky. Over the course of just a few days, the rogue star became brighter than the planet Venus . ... It turns out SN 1006 likely achieved an apparent visual magnitude of -7.5, making it the brightest supernova on record. ... NASA Web Site Statements, Warnings, and Disclaimers . ... 1006 AD: Supernova in the Sky ...

... 2003 March 17 . SN 1006: History's Brightest Supernova . ... Explanation: Suddenly, in the year 1006 AD, a new star appeared in the sky. ... Modern observations have been used to measure the speed of the still-expanding shock wave , allowing a better estimate of its distance and hence a better estimate of the true brightness of the supernova . It turns out SN 1006 likely achieved an apparent visual magnitude of -7.5, making it the brightest supernova on record. ... About APOD | ...

T wo new moons of Uranus , provisionally known as Uranus XVI (S/1997 U 1) and Uranus XVII (S/1997 U 2), have been discovered. ... Caliban (S/1997 U 1) orbits about 7.2 million km from Uranus and is about 60 km in diameter. ... D iscovered by Brett Gladman , Phil Nicholson, Joseph Burns, and JJ Kavelaars using the 200 inch Hale telescope ; the first images were taken 1997 Sept 6 and 7. ... Discovery of two new moons of Uranus , from Brett Gladman . ... Cornell Science News: Uranian moons . ...

... Welcome to the Boneyard. ... AA17666-11 sites several supernova mistakes from this period. 1998di (= KL Dra), IAUC 6982 discovered 1998/08/02 by Mike Schwartz . Found in MCG +10-27-12 NED01 at R.A. = 19h24m38s.19, Decl. ... Located 0".6 east and 3".8 north of the nucleus of MCG +10-27-12 NED01 ( Discovery image ( local mirror )) ( VSnet 98di web page ) . Mag 16.8, Type CV NOTE: This has now been confirmed to be not a supernova, but a cataclysmic variable (dwarf nova) of the CR Boo class. ...

X­RAY STUDY OF CRAB­LIKE AND COMPOSITE SNRS K. TORII, H. TSUNEMI Osaka University AND P. SLANE Harvard­Smithsonian Center for Astrophysics 1. ... We have observed several objects including 3C58, CTA1, and G292.0+1.8. ... 1997; Torii et al. 1997). ... Al­ though the center­filled radio morphology suggested an interior plerionic component, strong X­ray emission lines seemed to rule out such specula­ tions. ... G292.0+1.8 0.5 ­ 2 keV G292.0+1.8 2 ­ 10 keV Figure 1. ASCA SIS images of G292.0+1.8. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Have you ever looked at pictures of Saturn's rings and noticed what look like gaps in the rings? ... Gian Domenico Cassini discovered a large gap in Saturn's rings in 1675. Later, an astronomer named Encke discovered a smaller gap near the edge of the rings. ... It was found long ago that an orbit in the Cassini Division, as the large gap is named, has a period almost exactly one-half that of one of Saturn's moons named Mimas. ... 2008 Phil Plait. ...

... My interest in astronomy and physics likely had early roots in growing up in a dark suburb where the summer nights unveiled the rich tapestry of stars overhead. ... I grew to like the sciences as my favorite subjects - opening new ways to view the world around us. ... Therefore, Heritage is a natural extension of my interest in bringing science, particularly astronomy to the public in new, better, and unusual ways. Science is art. My current passion is science visualization. ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Publications of the ASP (PASP) . ... By the Light of the Moon . ... Moonlight varies over a greater range than the light from any other bright celestial object?planet, satellite, or star?in the entire sky. ... The level of light that disturbs this gland and its secretions is not yet accurately known, but indications are that this level is not much brighter than the full Moon. ...

ALMA | ... Phase Correction Algorithms | ... On this page, we describe what the phase correction algorithms set out to do and the framework we have developed to optimally use all of the available information. ... We are developing a Bayesian framework to combine all the information we have about the current and future meterological conditions (which are naturally accommodated as priors in a Bayesian scheme) with detailed physical models of the atmosphere. ...

... BLUE STRAGGLER STARS are unusually hot and bright stars found in the cores of ancient star clusters known as globulars. ... BACKGROUND (from wikipedia): Blue straggler stars are stars in open or globular clusters that are hotter and bluer than other cluster stars having the same luminosity. ... There is evidence in favor of this view, notably that blue straggler stars appear to be much more common in dense regions of clusters, especially in the cores of globular clusters. ...

... STScI-PRC96-03 and JPL-P-46536 HUBBLE FINDS SEARCHLIGHT BEAMS AND MULTIPLE ARCS AROUND A DYING STAR This image of the Egg Nebula, also known as CRL2688 and located roughly 3,000 light-years from us, was taken in red light with the Wide Field and Planetary Camera 2 (WFPC2) aboard NASA's Hubble Space Telescope. ... The central star in CRL2688 was a red giant a few hundred years ago. The nebula is really a large cloud of dust and gas ejected by the star, expanding at a speed of 20 km/s (115,000 mph). ...

The artist's concept depicts Kepler-186f , the first validated Earth-sized planet to orbit a distant star in the habitable zone. The size of Kepler-186f is known to be less than ten percent larger than Earth, but its mass, density and composition are not known. ... Prior to this discovery, the "record holder" for the most "Earth-like" planet went to Kepler-62f, which is 40 percent larger than the size of Earth and orbits in its star's habitable zone. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Monthly Sky Notes . ... NGC 6357's inner star forming region glows with the emission of ionized hydrogen gas. Image credit: ESO/VVV Survey/D. Minniti. ... Located around 8000 light years away in the constellation of Scorpius , NGC 6357 (sometimes called the Lobster Nebula ) is a typical stellar nursery, filled with vast clouds of gas and tendrils of dark dust. ... Subscribe to Astronotes . ...

. XMM-Newton Science Analysis System . omgsource (omgsource-1.4) [xmmsas_20070708_1801-7.1.0] . Meta Index / Home Page Occasionally problems can arise with the interface between the program and ds9, resulting in XPA errors and the ds9 image to disappear. This is more likely to happen if the system is very busy. If it does happen, then you click the Start ds9 button to restart the ds9 image displayer. XMM-Newton SOC/SSC -- 2007-07-09

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

Proposal Identi cation No.: A1790 Date Received: 2003-Mar-06 03:28:33 Technical Page Proposal Type: Short General Category: Astronomy Sub-Category: Spectroscopy Observation Category: Galactic Total Time Requested: 1 Hours Proposal Title: Shocked molecular gas in the supernova remnant W44 ABSTRACT: The radio-bright supernova remnant W44 has been found to be interacting with a molecular cloud that surrounds it and from which its progenitor star likely formed. ... Maybe Part of the observing run. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Australia Telescope 20GHz Survey . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... 1994: . Deep CCD images of the bright gamma-ray bursts GRB790418 and GRB790613 localization regions were obtained for the first time. In both cases, a faint blue star-like object (V = 24.5 m , BV m ) was detected within the region of localization of gamma-ray bursts. ... Based on sixty daily instantaneous spectra of the object SS433, obtained on the RATAN-600 in April-May 1994, we traced its variability in four very powerful flares at five frequencies. ... Archive . ...

Microsymposium 38, MS082, 2003 (A4 format) EVALUATING THE STRUCTURE OF THE SURFACE LAYER OF MERCURY. ... Photometric Analysis of the Lunar Surface Analogue. ... The phase function obtained directly on some segments of the lunar surface: 1- phase function of the Moon, 2 - phase function of Mercury, 3 - phase function of segments, converted to the lunar phase function system (correlation 0.8), 4 - phase function of segments, converted to the Mercurian phase function (correlation 0.9). ...