... 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. ...

The File System . ... Files are identified to the system using a unique identifier called the file specification , which can include disk and directory names as well as node names for accessing files across the network. On VMS systems, file names are usually thought of as having three parts *1 : the filename , the file type , and the version number . ... The full file specification, with node name, device, directory, file name, file type, and version being specified is shown in Figure 3.1 . ...

ATM Forum Message . Forums: . ... Discussion Forums | ... Please Look Over My Telescop Design Plans . Forum List | ... All, I am planning to publish this in the winter and I am wanting you experts to look over my astronomy guide for errors and suggestions. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Tonight's Sky . ... Sky this Month . ... Star Atlas . ... stars . ... The Sky This Week: April 1 - 10 . ... Observing springtime deep-sky objects with a large telescope . ... Why do some stars appear to flash a variety of different colors when you look at them through a telescope? ... So, Earthт??s atmosphere will bend some colors from especially bright stars more so than others, which makes the source look like itт??s flashing colors. Get instant access to subscriber content on Astronomy.com! ...

OptInt PmWiki : Pm Wiki / Page List Templates . ... template first:) . ... template last ...:) sections to specify output for the first or last page in the list or a group. ... template]] (:template defaults order=name:) (:template first:) Pages ordered by group (:template first {=$Group}:) Pages in group [[{=$Group}/]] (:template each:) * [[{=$FullName}]] (:template last {=$Group}:) {=$Group} contains {$$GroupPageCount} pages. (:template last:) {$$PageCount} pages total. [[#templateend]] . ...

... Here are a few features of the tweets from the 221st meeting of the American Astronmical Society . ... The retweet numbers are close to the values that Twitter has for the tweets, which means that I can't have messed up too much (I wouldn't expect perfect agreement since Twitter does not guarantee that any search will return all matching tweets). The most re-tweeted accounts. ... Number of re-tweets . ... The number of tweets used in this analysis is and the graph accounts for of this total. ...

... Table specifications may only appear in the body of a dataset specification. There is not limit to the number of table specifications which may appear in a dataset specification, but within a dataset table names should be unique. ... table table-name rows label optional-expression < ... table item specifications ... > . ... There is no limit to the number of items which may appear in a table specification. The final optional expression can be used to direct deceit to execute a function. ...

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2014 September 1 . Airglow Ripples over Tibet . ... Explanation: Why would the sky look like a giant target? Airglow. Following a giant thunderstorm over Bangladesh in late April, giant circular ripples of glowing air appeared over Tibet , China , as pictured above . ... Now Available: APOD 2015 Wall Calendars . ... About APOD | ...

Astronomy Picture of the Day . ... 1.09.2014 . ... Credit Copyright: Jeff Dai Explanation: Why would the sky look like a giant target? Airglow. Following a giant thunderstorm over Bangladesh in late April, giant circular ripples of glowing air appeared over Tibet , China , as pictured above. ... Now Available: APOD 2015 Wall Calendars . ... April . ... September 2014 . ... 2013 2014 . 2015 2016 . ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...

RTT150 . ... This search system is designed for generating the necessary information on series of pointings (observations of each source consist of sets of exposures with different filters and sometimes with different exposure times) for observed sources. Search results appear at the separate page as a table with the following data: . DATE - real (not evening!) observations date (in YYYY-MM-DD format); . ... Bin - minimal CCD binning mode (may vary during the observations); . ...

ERR=<exit specifier>,... and/or .. END=<exit specifier>,.. The following I/O statements are recognized: READ, WRITE, OP