... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Last week, our tour outwards made a stop at our own home planet. Permit me to hold our tour a bit longer, to linger and gaze upon the Moon. ... Complex molecules floated in the water, but the concentration of these compounds wasn't high enough for them to get any further along than making amino acids and the like. ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! ...

О Центре | ... Проекты | ... О Центре /Проекты /Our Life /Our town . ... Проекты 2005/06 . ... Our town . ... Zelenogorsk - my town Zelenogorsk is a town in Krasnoyarsk Region. ... My Zelenogorsk is the capital of Krasnoyarsk region. ... It is an industrial and very important town in Krasnoyarsk region, because many useful things are prodused here. ... Zelenogorsk Zelenogorsk is one of the towns in Krasnoyarsk region. ... About my town Zelenogorsk is a town is Krasnoyarsk region. ... Центр Образования ...

... Posts tagged ?close? ... For a discipline that relies so heavily on images, it is rather surprising how little use astronomy makes of the vast body of work on image analysis carried out by mathematicians and computer scientists. ... images. ... 1 Comment . ... Entries RSS . Comments RSS . ... General comments . ... vlk on [MADS] Parallel Coordinates . upvc windows on [MADS] Parallel Coordinates . ... Alfred Inselberg on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

... A closed surface (i.e. a compact surface without boundary) is homeomorphic to either a sphere with g handles (a connected sum of a sphere with g tori) or to a sphere with g M obius bands attached (a connected sum of a sphere with g copies of RP 2 ). A compact surface with boundary is homeomorphic to a closed surface with a nite number of disks deleted. ... Prove that on the sphere with g handles the maximal number of nonintersecting closed curves not dividing this surface is equal to g. IV.11. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Space Flight . ... Earth Satellites . ... By admin February 19, 2011 Posted in: Comets and Asteroids . ... Since it was launched in 1999, the Stardust spacecraft has travelled about 5.7 billion km (3.5 billion miles) on its odyssey from Earth to comet Wild 2, back to Earth then on to comet Tempel 1. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

It is a great honour and pleasure for me to talk from this tribune. ... This year I was lucky to present a Soros lecture on the reginal conference in Tyumen in the frame of the programm "Professional contacts". ... When people want to make something new it is a great thing to colloborate, to communicate with other people. ... The ideas of free creation live in Russia, and I hope we can try to build an Open society, the society without ksenophobia, without fear of new ideas, without fear of the future. ...

... Do you know why we have seasons on Earth? ... Even if you offer students the great activities developed by the Harvard researchers, or the great activities in ASP's teacher resource book, The Universe at Your Fingertips , your students still won't learn anything unless they work hard and think about their work. ... But none of these are worth a hoot unless they are also accompanied by hard work on students' part. ... The key to success in astronomy is the same as it is in everything else: hard work....

... PLE: Just another reminder about the Penumbral Lunar Eclipse on March 14 - 15. ... The moon passes completely inside the penumbra, or 'partial shadow', of the Earth, but no part of it actually enters the umbra, which would give a partial eclipse. ... 22 March, 7.30 p.m., Lecture Room 5, Stranmillis College, Belfast: IAA Public Lecture, "The Solar Wind: from Explosions on the Sun to Us", by the redoubtable Dr Miruna Popescu of Armagh Observatory (Doctorate just awarded - congratulations!) ...

... The beautiful Trifid Nebula (aka M20), a photogenic study in cosmic contrasts, lies about 5,000 light-years away toward the nebula rich constellation Sagittarius. ... Visible are snow peaked mountains near and far, tremendous cliffs, distant plateaus, the tops of clouds, and a dark blue sky. ... Yesterday, at about 10 am Universal Time, Mars and Earth passed closer than in nearly 60,000 years. ... At about 10 am Universal Time today, Mars and Earth will pass closer than in nearly 60,000 years. ...

The Chi-Square Goodness of Fit Statistic . This statistic enables us to test whether observed frequencies are close to . those we would expect. ... Expected frequencies . ... For example, if we . have an honest die we would expect 1/6 of all cases to show any of . ... So, for example, if we roll a die 60 times we would expect : . ... If we actually roll a die 60 times we wouldn't expect each of the faces . ... times each face actually comes up is the observed frequency for that face. ...

... This left a very few bits to guesswork; I've enclosed these in ??. ( ano@uk.ac.rdg.cs.csug ) @ SONG : In A Big Country I never saw you look like this without a reason Another promise fallen through, another season passes by you I never took the smile away from anybody's face And that's a desperate way to look for someone who is still a child In a big country dreams stay with you Like a lover's voice fires the mountainside ...

... There are four directives for table processing. ... Generates a new HTML <table> tag with the attributes provided in attr.. ... border (a positive integer) . ... Many are likely to ask why we didn't just use the standard HTML table markup (<table>, <tr>, <td>, <th>) instead of creating a new markup, and allowing nested tables as a result. ... And, this is not to say that nested HTML tables are impossible in PmWiki --they just can't be easily created by wiki authors using the default wiki markup. ...

OptInt PmWiki : Pm Wiki / Table directives . ... There are four directives for table processing. ... Generates a new HTML <table> tag with the attributes provided in attr.. ... border (a positive integer) . ... cellspacing (a positive integer indicating the space between cells) . ... And, this is not to say that nested HTML tables are impossible in PmWiki --they just can't be easily created by wiki authors using the default wiki markup. ... Can I define table headers using the table directive markup? ...

... January 22, 1998 . Closer To Beta Pic . Credit: S. R. Heap ( LASP / GSFC ), NASA . ... Since the 1980s, astronomers have been pointing toward Beta Pictoris , a young, sun-like star a mere 50 light-years distant, as a likely example. Beta Pic is surrounded by a disk of dust which we view nearly edge-on. ... The trick is to follow the disk as close in to the star as possible, without being overwhelmed by the direct starlight. ... About APOD > . ... NASA Technical Rep.: ...

The File System . This section describes how you can create new files, copy existing files, and delete obsolete files. ... RENAME to change the name of a file. ... Files can be created in several ways: text can be entered from the keyboard via the CREATE command, an editor can create a file, as can a running program, and files can be copied from other directories. ... To delete obsolete files, use the DELETE command followed by a file name or file name template (wildcards). ...

Your First Telescope . Articles | ... Modern amateur telescopes can be divided into three classes: . 1) The refractor is what most people think of when they hear the word "telescope". ... Refractor disadvantages: Some secondary color ("chromatic aberration") still visible in all but the best units, large aperture instruments can be massive, most expensive of the three designs (often by a large margin), "Guilt By Association" with horrible department store refractors. ... www.astronomy.net . ...

... To go through each file in the current directory and compare it with the same filename in another directory: #!/bin/sh # compare files to same file in directory "old" for i in * do echo $i: cmp $i old/$i echo done . ... Some examples of command substitution in for loops: #!/bin/sh # do something for all files in current # directory according to time modified for i in `ls -t` do ... done # do something for all non-fred files. for i in `cat filelist | ...

. grid ( 80 , 25 ) failure_color ( red,white ) diagram_font ( "Arial" , 20 ) dialog_font ( "Arial" , 12 ) dialog "ListOfInstruments" ( "Посуда и инструменты" ,white,blue,default, centered,centered,default ) vbox ( center ) listbox [ 'Sort' ] ( instruments, 3000 , 30 , 9 , [] , [] ) button ( close, "&Close" ) end_of_vbox end_of_dialog dialog "ChooseFruits" ( "Выбрать ягоды и фрукты" ,white,blue,default, centered,centered,default ) vbox ( center ) listbox ( 1000 ,value_o1, 30 , 4 , [ "Черная рябина" , "Яблоки

... The force F of gravity between two objects of mass m and M, whose centres are a distance r apart, is given by Newton's famous equation: [pic], where G = 6.67(10-11 N m2 kg-2, and F is measured in Newtons. So, the force in orbit Fo is weaker than the force on the Earth's surface F0 by the ratio: [pic] where the radius of the Earth is 6,400 km, and the orbit is 1000 km above the Earth's surface. ... Energy Considerations Another way to see all this is to consider the energy of an object in orbit. ...

... The Sun has come all of one day away from breaking its record for the longest period of inactivity for the last decade - reaching a mid-summer low and falling into yet another state of "hibernation". Yesterday, on the first day of autumn, new sunspots appeared on the surface of the Sun following an absence of almost 50 days. ... The first low lasted 51 days, from 21 July until 11 September last year. ... Now, almost a year later, it seems the Sun has hit a new low almost as "deep" as the first. ...