Classroom Activity: A Viewgraph Comet . ... This will simulate the Earth's orbit around the Sun. ... Draw several comets along the path with their tails pointing away from the Sun. ... You can create other viewgraphs that have a smaller scale and show several comet orbits or constellations. ... Show how the Earth's orbit is almost circular compared to the comet's. Explain that the Sun is at the focus of the orbits of the planets, asteroids, and comets. ... Actually, comets have two tails. ...

Next: When the clock is Up: Keeping Time Previous: The hardware and software . In the Debian system, the system time zone is determined by the symbolic link /etc/localtime љ . ... If it is unset, the system time zone is assumed. ... The date љ command shows the current date and time. ... date љ is also used to set the kernel's software clock: # date 07142157 . ... While each user can have his own time zone, the clock is the same for everyone. date љ only shows or sets the software clock. ...

... Show Times . ... Armagh Planetarium has a range of shows suitable for all the family. ... Due to the darkness and sound levels some shows are only suitable for children of six years and above. ... Please check the show descriptions (see below) for age ranges. ... AGE restrictions apply: NO ENTRY FOR CHILDREN UNDER SIX YEARS OLD . ... Live presenter-led show : Duration 25 mins . ... Specially produced by Armagh Planetarium, 'The Little Yellow Star' is a new show aimed at pre-school aged children. ...

The picture above was made with this demo POV file and this shower valve object POV file . This object is loosely based (visual, no measurments) on the SigmaTherm thermastatic shower valve by Sigma Faucets. It consists of a temperature adjustment, and two valves for controlling a tub filler and showerhead (for example). ... The valve lies on the Z=0 plane, and extends out in the positive Z direction, by 2.86 units to the central knob. ... The back plate of this valve is 8 units in diameter. ...

... To run the <LAYER> version of the example, select: flower.htm . ... However, if the page had several layers with absolute positions, and you wanted to place another layer in a relative position to one of the existing layers, you could use inline JavaScript to calculate the value for LEFT or TOP . ... In this example, there is really no need to use inline JavaScript to position the last flower layer, since you could just let the TOP value default to its natural value, as in the other flower layers. ...

... An Active Sun During a Total Eclipse . ... Taking advantage of such, the above image shows the solar eclipse earlier this month as covered and uncovered by several different solar observatories. ... The outermost image -- showing the outflowing solar corona -- was taken by LASCO ten minutes after the eclipse and shows an outflowing solar corona. ... NASA Official: Jay Norris. ... Publications with keywords: Sun - eclipse - solar maximum . Publications with words: Sun - eclipse - solar maximum . ...

... ESO, the European Southern Observatory . ... Green ESO . ... VLT/Paranal . ... Survey Telescopes . ... Galaxies . ... Planetarium shows . ... Distribution of the iron content (in logarithmic scale) in four dwarf neighbouring galaxies of the Milky Way (Sculptor, Sextans, Fornax, and Carina), shown as relative fraction, as derived from the FLAMES/VLT observations. There is a great diversity from system to system, which reflects their widely different star formation and chemical enrichment histories. ...

General Forum Message . ... Post . ... Angular Speeds Of Meteor Showers . ... Post Message | ... Does anyone know of some place online where I can find the average or typical angular speeds for given meteor showers (at least the major ones), preferably in degrees per second, or at least in descriptive terms, such as "fast" or "slow"? ... www.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 . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... The Real Reality Show: Would aliens be anything like us? ... The Real Reality Show: All about the Drake Equation . ... The Real Reality Show . ... The Real Reality Show: Matter and Energy . ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Facilities . ATNF facilities . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... Цвет: PLUSH BLUSH . ... Модель: SHOW ME OFF . Сезон: SS15 . ... Легкий, свободный и невероятно женственный топ Show Me Off с вязанными элементами будет смотреться так же утонченно как и платье. ... Бренд: Novline . ... Применяемость: Renault Logan . ...

In the C and TC shell, to show the values of all your environment variables: printenv TERM=vt100 HOME=/home/eucs/helper SHELL=/usr/local/bin/Tcsh USER=helper TZ=GMT0BST UCBPATH=:/usr/ucb:/bin:/usr/bin ATTPATH=:/bin:/usr/bin UCBSHELL=/usr/local/bin/Tcsh ATTSHELL=/bin/sh LOGNAME=helper MAIL=/home/eucs/helper/.mail . ... This shows the value of an assorted range of variables. ...

... Radiation mechanisms of astrophysical objects: classics today . ... S.A. Balashev, D.A. Varshalovich, A.V. Ivanchik, V.V. Klimenko , Ioffe Institute, Russian Federation . ... D.P. Barsukov, A.I. Tsygan , Ioffe Institute, Russian Federation . ... A.I. Kopylov, F.G. Kopylova , Special Astrophysical Observatory (SAO RAS), Russian Federation . ... F.G. Kopylova, A.I. Kopylov , Special Astrophysical Observatory (SAO RAS), Russian Federation . ... Conference poster . ... Slide shows and posters . ...

New England observer Lew Gramer, fresh back from his mid-November fish observing and meteor-catching expedition in South Florida, reports that December also promises to be a great month for celestial sky-sparks!" ... Other showers adding to the mix this month include several very minor showers, such as the Chi Orionids (3 Dec), Monocerotids (9 Dec) and Sigma Hydrids (12 Dec), which usually contribute no more than 2 or 3 meteors per hour during even post-midnight observing this month. ...

Voyager 2 image of Neptune showing the Great Dark Spot and associated bright clouds and a bright Scooter to the lower left. ... Central Latitude/Longitude (deg): N/A . ... Instrument: Narrow Angle Vidicon Camera . ... Instrument Field of View (deg): .424 x .424 . ... Illumination Incidence Angle (deg): N/A . Phase Angle (deg): N/A . ... Surface Emission Angle (deg): N/A . ... NASA Image ID number: P-34632 . ... Code 633, NASA Goddard Space Flight Center . Greenbelt, MD 20771, USA . ...

... Each plot shows the information about 4 S/C, by the different color. for the INTERBALL TAIL PROBE - the red color is used, . ... The polar diagram, which shows the corrected geomagntetic co-latitude and corrected geomagnetic local time of the 4 spacecraft during the time intervals selected in accordance with the FSP1 criteria. ... In the last 4 plots the days are shown along X axis, in the last two plots the Universal time is shown along the Y axis . ... for the POLAR - the third line, . ...

Enceladus . Saturn II . Enceladus [en-SELL-ah-dus] is one of the innermost moons of Saturn. ... Parts of Enceladus shows craters no larger than 35 km in diameter. ... This Voyager 2 mosaic of Enceladus was made from images taken through the clear, violet and green filters on August 25, 1981, from a distance of 119,000 kilometers (74,000 miles). ... Some regions of Enceladus show impact craters up to 35 kilometers (22 miles) in diameter, whereas other areas are smooth and uncratered. ...

... For given geographical longitude and time zone show the current data and time, Universal data and time, current local star time. ... Accept 10 different data formats (data&time, data with decimal day of month, data with decimal day of year, decimal year, some Julian dates), calculate from any formate to others, show day of week. Current data and time direct insertion function is exists. ... Calculate angular distance between two points at the sky by its equatorial coordinates. ...

... The observed distributions of stars of different ages and metallisities in the Z coordinate relative to Sun: (a) young ( t 3 Gyr) metall-rich ( [Fe/H] -0.13 ) stars; (b) young metal-poor ( [Fe/H]<-0.13 ) stars; (c) old ( 3 Gyr) metal-rich stars, and (d) old metal-poor stars. ... next figure | previous figure . ...

... download page . ... Thus, each document consists of the facsimile picture of a page (scanned image) and its textual content. The system operates with both text and facsimile document versions, or with text content only. ... Feynman Lectures on Computation (text version 786 Kb, facsimile pages 996 Kb (whole book 32 Mb)). ... In general, the "Forget-Me-Not" information and navigation system can operate without facsimile pages, however to better estimate the program, we recommend to download them. ...