Next: Imaging by an Optimizing Method . ... A big advantage of this numerical integrator is its stability: the error in the semi-major axis and the eccentricity depends only on the step size and does not grow with an increasing number of time steps. ... As the integration time increases, the numerical results become more contaminated by various errors. ... A new symplectic integrator produces no secular truncation errors in the actions of a Hamiltonian system. ...

... Pre-university education . ... Samara region . SSAU History . SSAU roadmap . ... Scientists of Samara University (joined SSAU and SSU) began to develop a unified manoeuvring unit for CubeSat-type nanosatellites for the first time in Russia. ... During one of his latest visits to SSAU he proposed to extend capability of the nanosatellites created in Samara University by making a manoeuvring unit and allocated funding to begin work on this topic. ... Nanosatellites of Samara University . ...

... The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ... Information on the NTP architecture, protocol and algorithms can be found in the Further Information and Bibliography page. The Building and Installing the Distribution page presents an overview of the procedures for compiling the distribution and installing it on a typical client or server. ...

... Dept. for Astrometry & Space Geodynamics . ... Dept. for Physics of Stars&Galaxies . ... Glass Archive . ... We invite you to participate in the 1st International scientific and practical conference, dedicated to the 100th anniversary of astrophysicist I. S. Shklovsky БЂњThe problems of modern astronomy and methodics of its teachingБЂќ . The conference will be held on October, 6б­8, 2016 at Natural sciences education department of Oleksandr Dovzhenko Hlukhiv national pedagogical university. ...

. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

... Other Characteristics of the Sun: Variability of Rotation, Magnetism, Chemical Structure, Planetary System. ... Methods of Solar Magnetic Fields Measuring: Visual, Photografic, Photoelectric. ... Empiric Datas of Magnetic Fields in Photosphere, Chromosphere and Corona. ... Characteristics of Magnetic Field in Balanced Force Tubes by Potential and Forceless Field. ... Phenomenons in Active Region (Magnetic Field, Spots, Torches, Solar Prominences, Flares, Discharges. ... Magnetic Fields in Flares. ...

... Choose one of the five problems on the Question Sheet. ... Your report should therefore focus on those aspects of computational physics relevant to the problem. ... An analysis of the computational aspects of the problem which you had to consider in order to solve the problem: · Describe relevant computational physics. ... Analysis of the relevant aspects of computational physics. ... You would then be expected to discuss aspects of the computational physics relevant to your problem. ...

Next: Initial conditions Up: Old neutron star distribution Previous: Introduction . The problem to be solved is to find stationary space distribution of stars which have had certain initial space and velocity distributions and move in a given potential. ... In principle, the most straightforward way to obtain the solution is to integrate directly the equations of motion for a sufficiently large number of stars with different initial conditions. ... Then space density is given by . ...

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... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Problems posed by massive stars . ... These questions were at least part of the motivation when CУЕssio Barbosa of Brazil's University of SУ?o Paulo and Donald Figer of the Space Telescope Science Institute in Baltimore surveyed observers and theorists to see what they believed were the most pressing problems concerning massive stars. ... Get instant access to subscriber content on Astronomy.com! ...

... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... My question is : How can an Earth-like environment, including gravity, be simulated on a spacecraft or a space colony? ... Centripetal force is what you feel when, for example, you are sitting in a car that makes a sharp turn and you are thrown to the outside of the curve. ... A small ship has to spin faster to feel the same force as a big ship spinning slower. ... 2008 Phil Plait. ...

... Epistemology is a part of the study of Philosophy dealing with how we use our senses to know something about the world. ... Yet we know that we can be deceived by our senses. ... If we cannot always trust our senses, how can we ever know anything for certain about the world? ... A branch of epistemology that has come into vogue in the last 10-15 years is the problem of consciousness. ... What relationship is there between our conscious experience and the true nature of the physical world? ...

Multi-Wavelength investigations of the Sun and modern problems of solar activity . SAO RAS . ... Representation of the last findings in the field of experimental and theoretical investigations of solar activity. The analysis of the maximum of the 23d cycle of solar activity and connection with Space Weather. ... Solar corona study. ... Solar activity and disturbances of the solar wind and cosmic rays. Modern observational methods for solar investigations. ... Copyright © 2006 SAO RAS . ...

... Dusting Spiral Galaxies . ... How much dust is in spiral galaxies? ... He dreamed of going to the Moon. ... A Distant Destiny . ... The Keyhole Nebula . ... Abell 2218: A Galaxy Cluster Lens . ... Almost all of the bright objects in this Hubble Space Telescope image are galaxies in the cluster known as Abell 2218. The cluster is so massive and so compact that its gravity bends and focuses the light from galaxies that lie behind it. ... What are five closely grouped galaxies doing in this image? ...

Why are there different versions of CIMA? Which version of CIMA should I choose? ... There is no CIMA log in my project directory --- what happened? ... If You are a normal, happy observer, You should choose the CIMA version with the highest version number, since that version contains the latest improvements and bug fixes. ... This means that programs like the data quick-look display and various ALFA instrument displays all exist in several versions just like the CIMA observing session itself. ...

Questions regarding the CCF should be addressed to the XMM-Newton Helpdesk .

... Zeeman effect in spectral lines can alter stellar lines even if the stellar lines are not split-- For greatest detection sensitivity we need to obtain polarised spectra Need a combination of polarisation analyser (polarimeter) with spectrograph = spectropolarimeter Leverhulme Lectures on Stellar Magnetism 23/02/09 Polarimeters Simplest polarimeter is a device that rejects one sense of polarisation ( ... Measure the intensity of the beam thorough two perfect circular polarisers. ...

... Meade Instruments Corporation . Telescopes ћ Binoculars ћ Microscopes . ... Frequently Asked Questions: LX200GPS . When I align the telescope, the alignment star is not in the viewfinder. ... After I select an object and press GOTO, the Autostar displays "Slewing.....", but does not seem to move. Is my Autostar broken? ... Can I use my Autostar II on his telescope to access my user objects? ... Choosing A Telescope . ... Copyright 2006 Meade Instruments Corporation, All Rights Reserved. ...

... Тhis new concept touches our simple lives, yet for those intrigued by the natural sciences, especially experts deeply engaged in the 'eternal' questions of general geology and astronomy, it is all the more fascinating. The problems to be faced by any theory for the formation of the Solar System . Any theory has to account for certain rather tricky facts about the Solar System. These are in addition to the obvious facts that the Sun is at the centre with the planets in orbit around it. ...