. This is a new popup window - close it when you are done . Submitted by Al Takeda on 12/06/2010 17:30:54 . Veil Nebula . Veil Nebula, Supernova remnant in Cygnus, Takahashi Epsilon-180, SBIG STL-6303E, RGB: 28:20:20 minutes, Total= 68 minutes, Chester, Vermont, 25 May 2009 . Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Virtual Hosts . ... When using a large number of Virtual Hosts, Apache may run out of available file descriptors (sometimes called file handles ) if each Virtual Host specifies different log files. ... Unix operating systems limit the number of file descriptors that may be used by a process; the limit is typically 64, and may usually be increased up to a large hard-limit. ...

... 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. ...

... Earth During a Total Eclipse of the Sun . ... Credit Copyright: Expedition 12 Crew , NASA Explanation: What does the Earth look like during a total solar eclipse? It appears dark in the region where people see the eclipse, because that's where the shadow of the Moon falls. ... The featured image shows the Earth during the total solar eclipse of 2006 March , as seen from the International Space Station. ... Publications with keywords: total solar eclipse . ... Cheering a Total Solar Eclipse . ...

... 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. ...

... Posts tagged ?law of total variance? ... To explain such decomposition and to make error analysis statistically rigorous, the law of total variance (LTV) seems indispensable. ... MADS] Law of Total Variance? Tags: additive , bias , law of total variance , MADS , mathematical statistics , mean integrated square error , mean square error , MISE , mse , probability theory , variance . ... Comment . ... Entries RSS . ... vlk on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2015 April 20 . Total Solar Eclipse over Svalbard . ... That was the feeling in Svalbard , Norway last month during a total eclipse of the Sun by the Moon. ... The next total eclipse of the Sun will occur in 2016 March and be visible from Southeast Asia. Follow APOD on: Facebook , Google Plus , or Twitter . ... About APOD | ...

... During the jump, the power level of the rfi goes down. (more info). p1693 took 327 pulsar search data during the main cable 8-4 repair. The data from 20feb14 (after midnite) showed (what appeared to be ) total power dropouts: . ... The first 2 gbyte file of each scan was processed (129 secs/file). There are 7 files starting at: . ... Page 2-4. total power vs time for files 100 -> 700. the dropouts became weaker, and then returned in file 500. ... dropouts were seen in the total power. ...