... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

Astronotes Armagh Planetarium's Stellar Blog! ... Meteors and Meteorites . ... Stars . ... Monthly Sky Notes . ... This famous depiction of the Leonids was based on a first hand account of a meteor storm by a minister, Joseph Harvey Waggoner. ... In the autumn the Great Square of Pegasus is visible in the southern night sky. ... I hope this guide to the November night sky is helpful and have fun star sight-seeing! ... Tweets that mention The Leonid meteors: highlights of the November night sky | ...

XMM-Newton Science Analysis System . ... If the parameter imageset was omitted on the command-line, a menu will appear prompting the user to select an image-file, either from a list of the last ten image-files assessed, or from a directory. ... If a check fails a warning message is displayed and the user is prompted to enter another file name. The selected image is then displayed using ds9 and shortly afterwards the main window appears (see Figure 1) . ... XMM-Newton SOC/SSC -- 2008-07-02 ...

... At high count rates, the video processing unit (VPU) of the FOC undercounts photon events, resulting in a nonlinear count rate. ... The FOC remains linear to much higher count rates for point sources than for uniform sources. ... Here, a uniform source is defined to be one in which the flux varies by less than +/- 10% on scales of 10 pixels, and the nonlinearity threshold is defined to be the count rate at which the FOC exhibits nonlinearity at the 10% level. ... 512 zoom x 1024 . ... 256 x 256 . ...

... Melted remains of Cassegrain spectrograph areтАж . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . ... Title: Melted remains of Cassegrain spectrograph are on the remains of the observing carriage . Description: Newtonian platform has collapsed, gears for platform rest on the dome track . ... Melted remains of Cassegrain spectrograph are on the remains of the observing carriage Newtonian platform has collapsed, gears for platform rest on the dome track . ...

... To go back in time, archaeoastronomers and teachers can turn to personal computers and any of a number of software packages. ... Examples include the Long Man of Wilmington, England and the Owl Man of Peru (see figure 8 and figure 9 ). ... Deciphering the unique number system of the Maya is another archaeoastronomy topic that involves a minimum of math. ... Several collections of early writing of the Maya survive; numbers from them can be read and in some cases interpreted (see figure 12 ). ...

MAURICE KELLY Maurice Kelly one night when about three parts loaded, Was making for home after twelve in the night. At the foot of the lane where for rest he remained A figure appeared there clothed all in white. Good night, sir," said Kelly, but got back no answer; The figure remained just as still as a post. ... But never a word got he from the ghost. ... When the figure moved off and the fight it was ended, Old Kelly, half stunned, put his hat on his head. ...

... Cosmic rays are extremely high-energy particles from far beyond our Solar System. They provide us with important samples of material from outer space. ... But now, using the remains of a star that died a thousand years ago, astronomers have found clues as to where exactly cosmic rays form. ... A glowing, expanding ring of material is all that is left. ... Astronomers believe they could go on to grow into cosmic rays by colliding with the material of the ring. ...

... Main . ... The RadioAstron is an international space VLBI project led by the Astro Space Center of Lebedev Physical Institute in Moscow, Russia. ... List of organizations which were taken part in developing of the project and now support the RadioAstron mission is presented here . The RadioAstron Newsletter # 29 , July 18, 2015. RadioAstron Announcement of Opportunity - 4 for observations from July 2016 to June 2017 inclusive. ... 2.7, December 17, 2015 : English version. ... Main ASC . ...