... Moon Phase below . ... ARTICLE: Why the moon always shows us the same face . ... Before you continue reading, you should know that this was not always the case, i.e. the Moon once was rotating with respect to the Earth, so that on every night a terrestrial observer (if there was one, because this was long, long before mankind appeared on our planet, and even before any major animals had appeared) saw another face of the Moon. ... Figure 1 (not to scale) shows how we can imagine the system Earth-Moon...

Next: The command line interface (TEXT CEILIDH ONLY) Up: Using Ceilidh as a Student Previous: Interpreted language exercises . ... For Question/Answer exercises you are given the following menu. Question/answer exercise menu for course "tst" unit "1" exercise "qu": vq view questions | pq print questions ans answer questions and submit | cks check submitted h help | ... To quit the exercise before answering all the questions type q as your answer. cks . ...

... Ace the GMAT(R) with the only official study guide from the creators of the exam With 25% brand new content, The Official Guide for the GMAT Review 2016 delivers more than 900 retired questions from the official GMAT(R) exam, complete with answer explanations and a 100-question diagnostic exam to help focus your test preparation efforts. ...

... 8, ``Celestial Mechanics'', 2002 Precession and free core nutation of neutron stars A. Gusev, I. Kitiashvili Kazan University, Russia In 1992 Wolszczan and Frail discovered a planetary system around the pulsar PSR 1257+12 [1]. ... Third case: the most likely possibility is the free precession of the pulsar with a rigid 81 neutron star. ... It is known that rotation of the terrestrial planets having rigid mantle and elliptical liquid core is characterized by Free Core Nutation (FCN). ...

... For more distant stars we must use other techniques. ... Hence if we see a distant galaxy and can pick out any cepheids lying within it, we can calculate its distance. ... Here then is another method to gauge the size of the Universe and there are yet more. volume at high enough temperature a nuclear fusion reaction sweeps across the white dwarf's surface and eventually we will see a spectacularly bright new star (hence nova) in our skies. ... Why is this relevant to the size of the Universe? ...

... The QBO period is equal to a linear combination of the frequencies corresponding to the doubled periods: of the tidal year (0.97 year ), of the regression of nodes (18.6 years ), and of the motion of perigee ( 8.85 years ) of the Earth's monthly orbit : 1 2 1 1 1 0.97 18.61 8.85 1 2.3 yr (1) In other words, the quasi-biennial oscillation of the wind direction in the equatorial stratosphere is a combined oscillation ...

... It's not the way that you say it when you do those things to me it's more the way that you mean it when you tell me what will be and when you stop and think about it you won't believe it's true that all the love you've been giving has all been meant for you I'm looking for someone to change my life I'm looking for a miracle in my life but if you ...

The ultimate force in the universe: Some thoughts about gravity. ... Gravity through the ages Aristotle: Earth, water, fire, air. Earth and water fall `down' to the center of the cosmos (geocentric or earth centered universe). The more earth or water in the object, the faster it is attracted to the center. ... Determines the fate of the universe (expand forever, or contract back in a `"big crunch"). ... Determines the fate of stars when they die (white dwarfs, neutron star, or black hole). ...

... Dark Matter Ring Modeled around Galaxy Cluster CL0024+17 . ... It is the relatively weak distortions of the many distant faint blue galaxies all over the image, however, that indicates the existence of the dark matter ring. ... A hypothesis for the formation of the huge dark matter ring holds that it is a transient feature formed when galaxy cluster CL0024+17 collided with another cluster of galaxies about one billion years ago, leaving a ring similar to when a rock is thrown in a pond. ...

Данный дистанционный консультационный пункт по математике закрыт. ... По-русски вопросы по математике обсуждаются в newsgroup под названием fido7.ru.math. ... Google Answers : форум вопросов и ответов на самые разные темы, в том числе и по математике. Сервис платный (при приеме вопроса посетителя просят внести сумму денег, которая возвращается, если вопрос остается без ответа), но можно как минимум почитать архив вопросов и ответов. На прощание оставляем вам архив старых вопросов и ответов . ...

Альтернативный форум . Scientific.ru Все форумы . Постоянные участники форумов [ .. ... The second law of Newton - Zhivotov, kinetic energy and work of forces. ... It is scarlet - work of tangential forces. ... Re: Второй закон Ньютона - Животова (Редактированное) (То) . ... Второй закон Ньютона - Животова, кинетическая энергия и работа сил. ... снова все то же Munin, 11.12.2007 13:39 . ... Re: Второй закон Ньютона - Животова, кинетическая энергия и работа сил. v_rtex, 08.12.2007 17:34 . ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Here we present the ionospheric parameters variations for quiet conditions. ...

... Part 1: Observations of Global Properties . ... Part 4: Inflation; Anisotropy and Inhomogeneity . ... Tutorial : Part 1 | ... The inflationary scenario invokes a vacuum energy density . ... Thus the expected density of the vacuum is rho = m 4 *c 3 /h 3 which is rather large. ... The inflationary scenario proposes that the vacuum energy was very large during a brief period early in the history of the Universe. ... If the inflationary epoch lasts long enough the exponential function gets very large. ...

... IAU planet classification Observing with a Telescope Large Scale Structure The observables: Local Group (size 1 Mpc) Virgo cluster (size 2+ Mpc) Virgo supercluster (size ~33 Mpc) Voids (size ~ 10-150 Mpc), Walls and sheets, aka filaments (size ~ 50-80+ Mpc) 1 parsec The nearest star is 1.2 parsecs away (Proxima Centuri). ... Virgo supercluster Voids, Sheets Filaments The Virgo Cluster is a cluster of galaxies at a distance of about 18.0 Mpc away in the constellation Virgo. ...

Uranus: around the Sun, "lying in the side". Uranus . ... Mass . ... The period of rotation . ... The average distance from the Sun . ... Excentricity of the orbit . ... Uranus is the seventh from the Sun great planet of the Solar system. ... The theoretical model of Uranus structure is following its upper layer is a gasoliquid shell under which is an icy cloak (the water and ammonia ice) then comes the core of the solid soils. The cloak and the core mass is about 85-90% of all Uranus mass. ...

M. ( / DIAS, Ireland), A. (ISDC, Switzerland) 1 - Key Question Only 3 binary systems regularly observed in TeV: PSR B1259-63 (young pulsar +Be star, P=3.4 y) LSI +61 303 (comp. source + Be star, P=26.42 d) LS 5039 (comp. source + O star, P=3.9 d) Origin of the high-energy emission? ... 2006; Neronov &Chernyakova 2007 4 3.4 years orbital period. e~0.87 Correlated variability with a sharp rise ( "two bumps structure" ) is seen in radio, X-ray (and TeV?) bands. ...

... Visible Distribution of Galaxies. ... Features of Elliptical, Lens-Shaped, Spiral and Irregular Galaxies. Galaxies with Bar. ... Distribution of Surface Brightness of Surface and Spiral Galaxies. ... Color Characteristics of Galaxies. ... Methods of Galaxies' Mass Determination. ... Hidden Mass of Spiral Galaxies. ... Features of Dark Matter Distribution in E and SO Galaxies. ... The Whole Number of Galaxies and Their Density by the Results of Observation on the 'Hubble' Space Telescope. ...

... Ronald J. Garan, Jr. COLONEL, U.S. AIR FORCE, RET.) NASA Astronaut (Former) . ... ORGANIZATIONS: Society of Experimental Test Pilots, Engineers Without Borders, Association of Space Explorers, Member of the Launch.org Council, and Founder of the Manna Energy Foundation. ... In 1991, Garan was reassigned to the U.S. Air Force Weapons School, Nellis Air Force Base, Nevada, where he served as an F-16 Weapons School Instructor Pilot, Flight Commander and Assistant Operations Officer. ...

... 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. ...

... Taking into account the probability of forced emergency landings, cosmonauts are trained for their actions at the forced landing site in various climatic and geographical zones. ... To work out practical skills of the crew on maintaining work capacity and preserving their lives during their independent (autonomous) stay in difficult physical-geographic conditions with rational use of the descent capsule equipment, portable emergency kit, regular harness, improvised materials on the terrain; . ...