... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2009 December 20 . Tutulemma: Solar Eclipse Analemma . ... Explanation: If you went outside at exactly the same time every day and took a picture that included the Sun, how would the Sun appear to move? ... Pictured is such a total solar eclipse analemma or Tutulemma - a term coined by the photographers based on the Turkish word for eclipse. ...

... Milky Way Over Crater Lake with Airglow . ... First, in the foreground, is Crater Lake -- a caldera created by volcanism on planet Earth about 7,700 years ago. Next, inside the lake, is water. ... Is that a cloud or an alien spaceship? ... APOD Turns Eighteen . ... The first APOD appeared eighteen years ago today, on 1995 June 16. ... Sharpless 115 . ... All of Mercury . ... For the first time, the entire surface of planet Mercury has been mapped. ... Star Forming Region NGC 3582 . ...

... Filesystems are created, i.e., initialized, with the mkfs љ command. ... Search for bad blocks and initialize the bad block list accordingly. -l filename . ... badblocks /dev/fd0H1440 1440 > bad-blocks . ... 1 block group . 8192 blocks per group, 8192 fragments per group . ... Then bad blocks were searched with badblocks љ , with the output redirected to a file, bad-blocks . Finally, the filesystem was created, with the bad block list initialized by whatever badblocks љ found. ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... Table files like the ones created in the section on imcnts can be displayed, printed and manipulated using the tasks contained in the stsdas.ttools package. ... sp> tables # Load the relevant package ta> tprint rp90_cnt prpar=yes # .tab extension assumed # the hidden parameter prpar is set to display the header # as well as the data ta> tprint rp90_cnt # Displays only the data info ta> tprint rp90_cnt prdata- prpar+ # Displays only the header info ta> tprint rp90_cnt prparam=yes | ...

The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... That produces an extra resistance to the flow of current. ...

... J. Brand, M. Felli, R. Cesaroni, C. Codella, G. Comoretto, S. Di Franco, F. Massi, L. Moscadelli, R. Nesti, L. Olmi, F. Palagi, F. Palla, D. Panella, R. Valdettaro . 2007, IAU Symposium 242, p. 223 . ... 2007, ApJ, in press . ... Murphy, G. C., Lery, T., O'Sullivan, S., Spicer, D., Bacciotti, F., Rosen, A. 2007, A , in press . ... Rubini, F., Lorusso, S., Del Zanna, L., Bacciotti, F. 2007, A , in press . ... Coffey, D., Bacciotti, F., Ray, T.P., Eisloeffel, J., Woitas, J. 2007, ApJ, in press . ...

... Seidewand created the event FREE WEEKLY TELESCOPE VIEWING AT STRASENBURGH PLANETARIUM: 4/2 cancelled for clouds, snow, . ... Free! ... Call Jim at 703-9876 for more info. 1 week ago . ... Seidewand created the event FREE TELESCOPE VIEWING AT STRASENBURGH PLANETARIUM . ... Seidewand created the event FREE TELESCOPE VIEWING AT STRASENBURGH PLANETARIUM: 3/26 outlook is hopeful . ... Seidewand created the event FREE TELESCOPE VIEWING AT STRASENBURGH PLANETARIUM: 3/19 outlook is excellent . ...

. To remove a directory that is a symbolic link that points to another directory use the command: rm directory_name . Notice that the directory does not need to be empty and you do not have to use the rmdir command. You are not really removing a directory, just a named symbolic link that points to the "real" directory.

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

God Science Forum Message . Forums: . ... God and Science ћ SETI ћ Software ћ UFO ћ XEphem . ... God and Science | ... In The Beginning, God Created......prophecy . ... I am beginning to believe that Genesis creation is about the creation of prophecy as much as it is a statement that God is the creator. ... So I ask, are you (anyone) willing to consider Gen 1 2 as stories of prophecy or are you determined that it is either about science or a literal 7-day creation? ... www.astronomy.net . ...

... Does the time it takes different methods to create all the elements coincide with the universeт??s accepted age? ... Illinois Urbana-Champaign) Different kinds of stars create elements at different rates, all of which are consistent with the age of the universe. Get instant access to subscriber content on Astronomy.com! ... Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below. ...

... The blue bubble is a planetary nebula known as Abell 33. Planetary nebulae are created when an aging star blows away its outer layers of gas in a gigantic cosmic bubble. ... Creating the illusion of the cosmic diamond is a bright star along the rim of the nebula. ... The star is about 700 light years away, that is halfway between Earth and the nebula. ... At the centre of the ring, you can see the remains of the star that created this planetary nebula, now a white dwarf . ...

ALBUM: floating Artist: Eloy @ SONG : Floating Instrumental @ SONG : The Light From Deep Darkness Out of the depth of nothing In nobobdy's time The earth was created The first morning starts Sun appears in the sky Winds stroking waves Evening shadows tumble down Eclipse the sun of life Herald the night Burning lights arise people take their places Dance a merry round They live without fear Help each other in their way through life Tomorrow we'll see They forget ...

... Aurora from Space . ... Magnetic Storms . ... The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... Why no aurora at the magnetic poles? ...

... Our Galaxy . ... Stars . ... Space Flight . ... NGC 2841: a spiral galaxy some 46 million light years away. ... It is especially hard to explain this process of star birth in some spiral galaxies. ... Targets include both star clusters and galaxies, and star formation rates seen range from the starburst galaxy M82 (the Cigar Galaxy) which is creating about ten new stars in its core alone every year to the much less fecund star producer NGC 2841. ... Tweets that mention Baby stars of NGC 2841 | ...

... PmWiki . ... PmWiki FAQ . ... pmwiki.org . ... Go to new wiki . ... PmWiki supports internationalization (internationalisation) of web pages, allowing accented characters to appear in page names and almost complete customization of PmWiki 's prompts. ... Pages for many languages such as French, German, Dutch, and Spanish have already been created and maintained at the pmichaud.com site. ... php if (!defined('PmWiki')) exit(); ##change to French language XLPage('fr','PmWikiFr.XLPage'); . ...

... 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. ...

NAME dbmmanage - Create and update user authentication files in DBM format SYNOPSIS dbmmanage filename [ command ] [ username [ encpasswd ] ] DESCRIPTION dbmmanage is used to create and update the DBM format files used to store usernames and password for basic authentica- tion of HTTP users. Resources available from the httpd Apache web server can be restricted to just the users listed in the files created by dbmmanage. ... This manual page only lists the command line arguments. ...

... This program was created for correlating chosen regions in the series of fts images. ... Chosen regions' . ... In this section the program counts the integral for each region of the grid for each image. ... As a matter of fact, the integral is total brightness of the region and it is counted by 'int_tabulated' IDL function. ... In addition, the program will show the count of the regions which correlate with the corresponding region (the brighter region means the bigger count) and its contour. ...