... It becomes A bipolar region is involved. Positive fragments Start of the data set. stronger and bigger. move toward the negative ones, and some of them touch each other. ... Positive fragments, which just disappeared, emerge again and become stronger at the side of the negative ones. ... The main positive and negative fragments become closer. ... Some negative fragments move toward the positive ones and cancellation occurs. ... The positive fragments begin to move toward the main negative ones. ...

... Orbits in Space . ... The ion rocket is another means of providing thrust, more gradually but also more efficiently than a conventional rocket. ... As in the nuclear rocket, the energy which propels the xenon jet comes from a different source; here it is electrical energy from solar cells. ... The XIPS ("zips") ion engine developed by the Hughes corporation was tested in the laboratory and then aboard a Russian spacecraft, launched 6 October 1997; it is the one shown on top of this page. ...

To continue a command onto another line enter a ' \\ ' (backspace) character and then press <Return> . You can then continue entering the command. For example: rcp ubik:/home/roger/recipe.ps .; Return> lpr -Pps3 #6m recipe.ps . This copies the file recipe.ps from the home directory of the user roger on the remote host ubik to the users current directory. ... If you are using the Bourne, BASH or Korn shell a > character appears as a prompt at the start of the second command line. ...

The ion rocket is another means of providing thrust, more gradually but also more efficiently than a conventional rocket. ... As in the nuclear rocket, the energy which propels the xenon jet comes from a different source; here it is electrical energy from solar cells. The reason an ion rocket is much more efficient than ordinary rockets is the way its jet is produced. ... As with solar sails, solar ion engines are mainly practical in the inner solar system, where ample sunlight is available. ...

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

Astronotes Armagh Planetarium's Stellar Blog! ... Science Fiction . ... Posted on July 3, 2012 | 17 Comments Mankind is responsible for numerous achievements in technology, arts and science.However, how much can this attributed solely to the human mind or is there another reason man has achieved such [ ] . Continue Reading.. Posted on September 26, 2011 | ... 17 Comments Apollo 18, a movie hybrid of horror and science fiction is stirring up a lot of interest. ... Posted on June 9, 2011 | ...

... The storm began quite unexpectedly. The strongest geomagnetic storm for the last seven months began on Earth almost precisely at the same time as the solar eclipse reached its maximal stage, the culmination of which occurred at GMT 02:35 (06:35 Moscow time). ... Oscillations of such amplitude in the magnetic field have not been observed since October, 11th of last year, which is more than seven months ago. ... We can only add that the magnetic storm lasted approximately 9 hours. ...

Blackholes Forum Message . ... Space Inside The Black Hole . ... All space and mass enter the black hole through null space...they do enter the black hole though, but as an instananeous transition through null space...time does not enter it...time is the event horizon. ... Its area of the event horizon describes the latent negative space energy one can tap; the volume of the black hole describes the latent positive space energy one can tap. ... www.astronomy.net . About Astronomy Net | ...

... 27.07.2011 . ... Comet Garradd was discovered two years ago by Gordon Garradd in Australia , and is currently visible through a small telescope at visual magnitude nine. Officially designated C/2009 P1 (Garradd), the comet will likely continue to brighten, with recent projections placing it at peak magnitude six or seven in February 2012, just below naked eye visibility. ... July 2011 . ... 2011 2012 . ... Publications with keywords: comet - Solar System . ... Comet Lovejoy over The Great Wall . ...

... Tags: biased , breakdown point , chi-square , confidence interval , coverage , delta chi-square , estimator , LAD , mean , median , plug-in , rmse . ... Thanks to L. Lyons? work discussed in [ArXiv] Particle Physics , I found this paper, titled Systematic Errors describing the concept and statistical inference related to systematic errors in the field of particle physics. ... Tags: bias , confidence interval , confidence region , coverage , Errors , Estimation , inference , Model Selection . ...

Next: Current Challenges Up: Scientific Results from Deconvolved Previous: HST Science: Structure . ... The presence of strong central concentrations in the starlight of galaxies is important in understanding their dynamics, and in searching for the massive compact objects thought to exist in (at least) active galactic nuclei. ... The core of the Andromeda galaxy, M31, has also been suspected to harbor a massive central object from ground-based spectroscopic data (Dressler , 1988, Kormendy 1988). ...

Name: PGOPEN Purpose: open a graphics device Category: GRAPHICS File: pgplot.src Author: T.J. Pearson Use: see description below. Description: INTEGER FUNCTION PGOPEN (DEVICE) CHARACTER*(*) DEVICE Open a graphics device for PGPLOT output. ... Returns: PGOPEN : returns either a positive value, the identifier of the graphics device for use with PGSLCT, or a 0 or negative value indicating an error. ... Updates: Oct 16, 1998: JPT extracted from source; modified for GIPSY. ...

... The craters were caused by the impacts of comets and asteroids. ... In fact, up to a diameter of about 10 meters (33 feet), most stony meteoroids are destroyed in the atmosphere in a terminal explosion. ... The famous meteor crater in northern Arizona, some 1.2 kilometers (4,000 feet) in diameter and 183 meters (600 feet) deep, was created 50,000 years ago by a nickel-iron meteorite perhaps 60 meters (197 feet) in diameter. ... These range in diameter from a few meters to about 8 km. ...

... The compression of iflo/ lband receivers (lband wide , lband narrow) was measured on 29apr03. ... Center a band at 1415 Mhz and pass it through a 5 Mhz IF filter (centered at 260 MHz). ... Center another band at 1350,1330 Mhz. ... The 1350 data was normalized to full scale while the 1415 Mhz data was normalized to medianTsys -1 (so the radar 1350 scale and the 1415 Mhz scale are not the same). ... You can see the double bumps in the faa radar (this is the 1350 then 1330 pulses spaced by 6 usecs). ...

... Bad Astronomy . ... Every few months, one of a series of questions comes up on the USENET group sci.astro involving tides, or the rotation of the Moon, or the recession of the Moon from the Earth. ... Why the Moon's rotation period is the same as the length of time it takes to orbit the Earth (same as number 1, but phrased differently). ... But when this happens, the time it takes for the Earth to rotate once will be slowed to exactly the same time it takes for the Moon to go around the Earth once! ...

Astronomical Society . ... ASP Member Portal . ... Congratulations to Andrew Fraknoi, former Executive Director of the ASP, currently chair of the Foothill College astronomy department, for his selection as an honorary member of the Royal Astronomical Society of Canada.€а . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ...

I'm stumbling down that street I'm out of place And I'm an angry man a voice without a face Help me up My feet won't touch the ground I wish you had time to talk But your hours just fade away I wish you had time To wait another lonely day See the path becoming clear And you'll see you're never near Climb to the top and shout out loud You're never Stepping out of the crowd.. ...

. Mars has become the center of intense interest since the Martian Meteorite results were announced. Currently there is a lively debate whether or not primitive life formed there or not.

... 2010 June 7 . Comet McNaught Becoming Visible to the Unaided Eye . ... Explanation: A new comet is brightening and is now expected to become visible to the unaided eye later this month. ... Although predicting the brightness of comets is notoriously difficult, current estimates place Comet McNaught as becoming visible to unaided northern hemisphere observers in late June, before sunrise, and in early July, after sunset. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

... Meta Index / Home Page This section documents warnings and errors generated by this task (if any). ... The Keyword TIMEDEL should be present in the input file . ... corrective action: CONTENT keyword should be present in the input file header . ... Count rate errors negative . ... corrective action: Count rate errors must be positive . ... corrective action: TSTART keyword should be present in header of GTI file . ... corrective action: TSTOP keyword should be present in header of GTI file . ...