... Bad Astronomy . Misconceptions . ... Bad Astronomy : The Moon only shows one face to us because it is not rotating. Better astronomy : The Moon only shows one face because it is rotating, once every time it revolves around the Earth. ... Place the Moon model on the table about 30 centimeters (one foot) away with the X facing the Earth model. ... You'll see that to keep the X facing the Earth model, you have to rotate the Moon model as it goes around the Earth model . ... 2008 Phil Plait. ...

It was hypothesized that the size of the cal deflection might depend on the rotation angle of the alfa receiver ( 2004 Dec20 Holistic estimates of Alfa cal values.. ... The data acquisition consisted of moving from rotation angle -90 to +90 in 100 seconds, then +90 back to -90. ... Fig 1: The fractional change in cal versus rotation angle is plotted. ... The cal deflection is not a function of rotation angle down to .3% of the cal value. processing: x101/050601/rot_cal.pro home_~phil ...

Lesson Plan #29 http://www.phy6.org/stargaze/Lcircul.htm . A short but important section, deriving centripetal acceleration for motion at constant speed around a circle. ... That the "centripetal acceleration" of an object going around a circle of radius R with constant speed v equals v 2 /r and is directed towards the center of the motion. ... Terms: uniform circular motion, frequency, peripheral velocity, centripetal acceleration and force. ... A newer one An older one Timeline Glossary . ...

An astronaut in low Earth orbit moves in (approximately) a big circle extending around the Earth. ... That can be interpreted as stating that in the astronaut's frame of reference, all bodies are subject to two forces, gravity and the centrifugal force, and the two are in perfect balance, adding up to zero. ... Wheel-shaped space . ... The science-fiction film "2001: A Space Odyssey" featured spinning space station, whose rotation provided the crew with "artificial gravity." ...

... get out of the dumpster . ... get your keys from him . go get on your bike and ride . punch out the biker . ... hide in the yard (near left side) . ... put meat in a car . ... get fake ID's . ... open chest (use tire iron) . ... get hover unit from smashed car (use tire iron) . ... steal box of bunnies . open bunny box on field . ... go back to souvenir booth; get another box . open box #2 . ... open floor safe (use one of the part numbers) . ... get on your bike (far left of plane) . ...

... Credit: Mike Salway Explanation: South is toward the top in this frame from a stunning movie featuring Jupiter and moons recorded last Thursday from the Central Coast of New South Wales, Australia. ... In the early frame above, Ganymede , the largest moon in the solar system, is off the lower right limb of the planet, while intriguing Europa is visible against Jupiter's cloud tops, also near the lower right. ... Also finally erupting into view at the right, is Jupiter's volcanic moon, Io . ...

Next: ktrek Up: ksnow & ktrek: displaying Previous: ksnow & ktrek: displaying . Rotating the table . In ksnow there six buttons to rotate the table ( Rotate +X, Rotate -X etc.) Clicking on one of the buttons rotates the table over + or -10 degrees around the axis and the rotated table is displayed. ... Movie . To make a movie, click (left) on one of the Movie buttons. ... Next: ktrek Up: ksnow & ktrek: displaying Previous: ksnow & ktrek: displaying Richard Gooch . ...

An extra leap second has to be inserted at the end of 2008, so this is how you should count down on New Year's Eve to celebrate the start of the International Year of Astronomy according to Irish astronomers. The extra second is needed to bring the uniform measure of time used by physicists using atomic clocks back into nearly exact agreement with time as measured by the rotation of the Earth. ... There will be national and international events organized throughout the year to mark the occasion. ...

... В разделе По форуму . ... На форуме начался конкурс - Астрофотография месяца: АПРЕЛЬ! ... Форум . ... Дополнительные форумы ? Горизонты науки о Вселенной (Модераторы: Дмитрий Вибе , AlAn ) . Обсуждаем проблемы современной астрономии, астрофизики и смежных наук. ... Тема / Автор . Ответов / Просмотров . Последний ответ . ... Автор Дмитрий Вибе . 16 Ответов . 418 Просмотров . ... Автор Сергей Попов ? ... 5 102 Просмотров . ... О разделе Горизонты науки о Вселенной. ... Автор Ах . ...

... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...

For around forty years, astrophysicists have observed the annihilation of positrons in the Galaxy at a prodigious rate. ... The fact the Galactic bulge far outshines the disk in annihilating positrons which are injected into the ISM at low energies makes the source of the positrons difficult to identify, as the main source of such positrons are prima facie located in the Galactic disk. ...

... Contemporary Mathematics Summer School . Second half of July, 2009; Ratmino cultural center in Dubna, Russia) . ... Around a hundred students from the last two years of high school and the first two years of university take part in the ten days program. ... The words, Contemporary Mathematics, in the title are not an exaggeration, as often courses have finished with a discussion of open problems. The school is unique because of its students and professors. ... This was continued in 2008. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Moon . ... Earth Satellites . ... By admin October 4, 2012 Posted in: Moon . A tiny second moon.This is Phobos (27 km across) seen over Mars by ESA's Mars Express (Image credit:ESA) . ... They concluded that at any given time Earth probably has a second moon. ... But, just perhaps, briefly the Earth had a second natural satellite seen by thousands of people.Remember the spectacular fireball witnessed over the UK and Ireland on 21 September 2012 ? ...

... Three different techniques for averaging have been introduced. ... The average functions mentioned above will normally produce a result frame whose world coordinates are the intersection of the father frames' world coordinates. ... Averaging statistically consistent values --- љ This command differs somewhat from the purely mathematical functions of the previous two commands in the sense that it tries to anticipate some of the astronomical content of the input data frames. ...

... Donate to Support Science Literacy . ... 2016 Annual Awards . The ASP is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ... Shop the AstroShop . ... 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.. ...

... The TRACE images may be used without restrictions in publications of any kind. ... These two images, taken on 18 November 2000 at 15:54UT and 16:11UT, respectively, show such an event: the red circle in the image to the left shows a region where many loops are cooling, with bright loop tops (the intensity scales with the square root of the image to reduce the dynamic range). ... See also a collection of images related to the Sun, other cool stars, and solar-terrestrial effects . ... Images | ...

... The gravis-ultrasound did work nice in the ASUS-SP3 and ASUS-SP4, inspite of this, but the gravis-ultrasound-max I have here got gmod to kernel panic on both boards, and sometimes when playing au-files via /dev/audio did strange things, like playing the rest of an older, previously played sound after the new one. ... Dhrystone time for 500000 passes = 7 by 63559 dhrystones/second . ... There is a new version of the ASUS-Board which should have definitely less problems. ...

... ESO, the European Southern Observatory . ... ESO's Governing Bodies . ... Travel to ESO Headquarters . ... Visits to ESO Sites . ... Architecture at ESO . ... ESO . ... Solar System . Star Clusters . ... Stars@ESO . ... This animation shows an artistтАЩs impression of the remarkable planetary system around the Sun-like star HD 10180. ... Here we initially see the HD 10180 planetary system in its entirety with the planets labelled. ... Milky Way : Star : Circumstellar Material : Planetary System . ...

... 2003 June 8 . Rhea: Saturn's Second Largest Moon . Credit: Voyager , NASA ; Copyright: Calvin J. Hamilton . Explanation: Rhea is the second largest moon of Saturn , behind Titan , and the largest without an atmosphere. ... Rhea 's rotation and orbit are locked together (just like Earth's Moon ) so that one side always faces Saturn. ... NASA's Cassini spacecraft is currently on route to Saturn and will arrive in 2004. ... About APOD | ... NASA Official: Jay Norris. ...

... Skalnatґ Pleso 43, 1 ­ 2, (2014) e Mini-MegaTORTORA ­ multichannel system for wide-field optical monitoring with high temp oral resolution V. Sasyuk1 , G. Beskin2 , S. Karp ov2 , S. Bondar3 , A. Perkov3 , E. Ivanov3 , E. Katkova3 and A. Shearer4 2 Kazan Federal University, Russia Special Astrophysical Observatory of Russian Academy of Sciences, Russia 3 Insttitute for Precise Instrumentation, Russia 4 National University of Ireland, Galway, Ireland Received: November 4, 2013; Accepted: ?? ...