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... I normally begin by asking the class what they think would be different if the Moon didn't exist, or if the Sun were closer to Earth, or if a star exploded nearby. ... The winds would be much stronger. ... In using what-if questions in the classroom, it is worth bearing in mind that students extrapolating the effects of new scenarios will encounter two different situations: direct changes to the new version of Earth and indirect changes resulting from the direct changes. ...

... Abstract Determine whether a file exists. ... Brief_I/O VARIABLE I/O DESCRIPTION -------- --- -------------------------------------------------- fname I Name of the file in question. ... Examples The following code fragment illustrates the use of exists_c . ... Exceptions 1) If the input name is blank, the error SPICE(BLANKFILENAME) will be signalled. ... Files None. ... Version -CSPICE Version 1.1.0, 08-FEB-1998 (NJB) References to C2F_CreateStr_Sig were removed; code was cleaned up accordingly. ...

... This task operates on event data in an event list. ... In the first two cases, the celestial coordinates of the reference point are taken respectively as the values of the RA_NOM , DEC_NOM or RA_OBJ , DEC_OBJ values in the input event file header. ... Although the OM attitude information may be more accurate, it will not be present throughout part of the observation, and as such, the default source for the attitude data should be "ahf". ...

... PmWiki . ... Summary: Version 1 to version 2 upgrade suggestions:) This page gives suggestions for upgrading an existing PmWiki 1.x installation to use PmWiki 2.0. In this page we assume that a site administrator already has a site running using PmWiki version 1.x or earlier in a somewhat standard configuration, and wants to upgrade to the 2.0 software. Important note: The normal PmWiki upgrade procedure (i.e., copy the new software over the existing one) won't work for moving from 1.x to 2.0. ...

Blackholes Forum Message . ... Good Question. ... We really don’t know what causes gravity ( mass properties ) only how it works in the present universe state. ... It may be that you have just proven your assumption is wrong and gravity/mass properties do depend on the present universe state to exist. ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Executable GOTO statements . ... Input/output statements . ... GOTO statement_number_variable, (snr1, snr2, snr3) - an assigned GOTO statement, jumps to the statement number that equals the statement number variable (an arbitrary number of statement numbers snr are permitted). GOTO statement_number_variable - this is an assigned ordinary GOTO statement, it is a combination of the first one, GOTO snr1, and previous one, GOTO statement_number_variable without a list of permitted alternatives. ...

dfos = Data Flow Operations System, the common tool set for DFO . That initialization file sets up a standard set of global variables which must exist for dfos to run. ... The .dfosrc file contains one part of the instrument specific (or better: account specific) information needed by dfos. ... The set of links under 'Installation' collect a set-by-step installation scenario which makes sense only if the configuration files are filled reasonably. ...

... To help answer these questions, the largest and most mysterious moon of Saturn got a quick first look from the Cassini robot spacecraft soon after entering orbit around the giant planet last week. Cassini Images Density Waves in Saturns Rings . ... The Cassini spacecraft just entering orbit around Saturn has started sending back spectacular images of Saturn's immense ring system in unprecedented detail. ... M57: The Ring Nebula . ... Cassini to Venus . ... NGC 7331: A Galaxy So Inclined . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2016 February 1 . Find the Man in the Moon . ... Explanation: Have you ever seen the Man in the Moon? ... Surprisingly, there actually is a man in this Moon image -- a close look will reveal a real person -- with a telescope -- silhouetted against the Moon . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

Summary of the research statement of Mikhail V. Bondarko Recently I proved: the weight complex functor of Gillet and Soule factors through Voevodsky motives. ... I will study eective Voevodsky motives in terms of certain Chow-weight homology obtained by applying the Chow functors (of cycles of a xed dimension modulo rational equivalence) to the terms of weight complexes. ... Dually, the Chow-weight cohomology measures a certain "dimension" of motives. ...

... Astronomy index . ... This tour, of the world of astronomy, physics and spaceflight, may just as well end with a light-hearted 1878 poem by the Czech poet Jan Neruda . ... Do Frogs Exist there Too ?" . ... Like moles they dig for learning. ... They call one foot, that's all. ... Do frogs exist there too?" ... star? jim ?ab?k u?en? . ... teprv jim loket jeden. ... Foot" as used here, in Czech "loket," actually means "cubit," the distance from elbow to stretched fingertips, about a foot and a half. ...

OptInt PmWiki : Pm Wiki / Upgrading From Pm Wiki 1 . This page gives suggestions for upgrading an existing PmWiki 1.x installation to use PmWiki 2.0. In this page we assume that a site administrator already has a site running using PmWiki version 1.x or earlier in a somewhat standard configuration, and wants to upgrade to the 2.0 software. Important note: The normal PmWiki upgrade procedure (i.e., copy the new software over the existing one) won't work for moving from 1.x to 2.0. ...

Next: Explosive Events Up: Technical Research Summaries Previous: Dynamics of Co-orbital Satellites Contents . The solar group continues to make excellent use of both existing and new data from the SoHO satellite, in particular, data from the SUMER, CDS, EIT and MDI instruments, in addition to data from the TRACE satellite. ... A new line of investigation was started in late 2004, i.e. the origin of radio emission from brown dwarfs. ... Explosive Events . ...

... This appartus will drop a mass from different heights. When the mass strikes the ground, some percentage of its original energy will be absorbed by the ground. ... The percentage of the energy which is absorbed by the surface on each "bounce" (EAS) . ... The impact velocity of the object will also be given at each bounce. ... Start= Drop the ball after Energy, Mass and EAS have been set; resume after step or pause has been selected . ... Reset = Reset experiment to intial values . ...

... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 > Modules . ... To enable mod_dav , add the following to a container in your httpd.conf file: Dav On . ... In addition, a location for the DAV lock database must be specified in the global section of your httpd.conf file using the DavLockDB directive: DavLockDB /usr/local/apache2/var/DavLock . ... Use the Dav directive to enable the WebDAV HTTP methods for the given container: <Location /foo> Dav On </Location> . ...

This document is the Table of Contents for Funtools. ... The Funtools library provides simplified access to a wide array of file types: standard astronomical FITS images and binary tables, raw arrays and binary event lists, and even tables of ASCII column data. ... funimage: create a FITS image from a Funtools data file . ... funtable: copy selected rows from a Funtools file to a FITS binary table . ... Funtools Data Files . ... Binning FITS Binary Tables and Non-FITS Event Files . ...

Next: WCSTools: Image World Coordinate System Utilities . ... Up: FITS-Flexible Image Transport System . ... The Deep Extra-galactic Imaging Multi-Object Spectrograph (DEIMOS) under construction for Keck II will employ a detector comprised of a mosaic of eight CCDs. World coordinate system (WCS) information is needed for mapping between FITS pixels and many other systems. ... As an alternative, we store the bulk of the WCS information in a separate FITS table associated with the image HDUs. ...

... This is perhaps the most common question asked by visitors to the planetarium. ... This is known as the Drake Equation and reads as follows: N = R* fp ne fl fi fc L N is the number of communicating civilizations in the galaxy R* represents the average rate of star formation in the Milky Way Galaxy fp is the fraction of those stars that have planets around them ne is the number of planets per star that are capable of sustaining life fl is the fraction of planets in ne where life ...

... An interactive editing facility EDIT/TABLE exists in MIDAS to create and modify tables. The editor works in a ``page--oriented'' form, a ``page'' consisting of 20 rows and several columns to fill the screen format, using a Keypad mode or a command mode to perform the editing functions. The command mode is accessible by hitting CNTL-Z. Most of the editing functions are implemented on the right keypad of the keyboard (Table ) as well as on the left keypad if it exists (e.g on Sun workstations). ...