... Bad Astronomy . Misconceptions . ... Bitesize Astronomy . ... The Nine Planets . ... The webpages on this and other sites give lots of details, but I thought it might help if I made a brief synopsis of the arguments I and others make to debunk this pseudoscientific silliness. ... The Sun is not acting in any way abnormally. There are not more earthquakes than normal. ... This is exactly the same sort of bad logic used in the earthquake argument, and is just as wrong. ... 2008 Phil Plait. ...
... Параметры пространственной структуры галактических подсистем обычно находят либо подсчетом звезд на разных расстояниях, либо определением их полного количества до соответствующего расстояния с последующим моделированием вертикального распределения экспоненциальным законом. ... Восстановленное распределение звезд подсистемы по высоте получается обработкой распределения по Z max вычисленными весами (т.е. отношениями) и функцией плотности вероятности нахождения звезды в разных точках орбиты. ...
... Кометы . Движение комет . ... Звезды . ... Большинство комет остаются такими даже и вблизи Солнца. ... Впервые И. Ньютон вычислил орбиту кометы из наблюдений ее перемещения на фоне звезд и убедился, что она, подобно планетам, двигалась в солнечной системе под действием тяготения Солнца. Позднее английский ученый Галлей вычислил орбиты уже многих наблюдавшихся комет и установил, что кометы, наблюдавшиеся в 1531, 1607 и 1682 гг., - это одно и то же светило, периодически возвращающееся к Солнцу. ...
... Ф ОТОЭЛЕКТРИЧЕСКИЙ ГИД . ... П ринцип действия построенного автором гида основан на определении с помощью фотоэлектронного умножителя (ФЭУ) изменений светового потока от звезды, закрываемой непрозрачной преградой при движении гида. ... Если изображение звезды проецируется на щель, то весь световой поток от нее проходит сквозь зеркало и поступает на фотокатод ФЭУ. ... Если больше половины изображения звезды погружается в щель - скорость начинает увеличиваться, меньше половины - уменьшаться. ...
Глава 3. ... Глубинная дифференциация вещества . В предыдущей главе мы выяснили, что все небесные тела Солнечной системы не являются неизменными на протяжении миллиардов лет, как полагают многие астрономы и небесные механики. ... Итак, первым рабочим веществом в планетной геологической эволюции, по нашему предположению, является углекислота, которая вследствие этого играет в развитии небесных тел великую роль в процессе глубинной дифференциации вещества. ... Происхождение материков и океанов . ...
... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... Sky this Month . ... Sky this Week . ... Astronomy for Kids . ... Melas Dorsa reveals a complex geological history on Mars . ... Melas Dorsa in full color. ... On April 17, the orbiter pointed its high-resolution stereo camera at the Melas Dorsa region of Mars. ... Melas Dorsa impact crater perspective view. ... Melas Dorsa topography. ... Only registered members of Astronomy.com are allowed to comment on this article. ...
The Astronomical Society of the Pacific gratefully acknowledges the partnership of the Geological Society of America in sponsoring this national meeting including the "Cosmos in the Classroom" Symposium and the "Earth & Space Science: Making Connections in Education and Public Outreach" symposium. ... NASA Lunar Science Institute . Infrared Processing and Analysis Center . NASA Herschel Science Center . ... The Center for Astronomy Education at the University of Arizona . ... Big Kid Science . ...
... tr,a ME ae, Se at aunsy B iyD tw r l a d Srn e n M t g. o Recent transits of Mercury (15 November 19 9 9 ) and V enus (8 J une 2004 ) have led to new interest in the origin and ex planation of the famous black drop phenomenon (e.g. Schaefer 2001, Schneider, P asachoff and Golub 2004 , Sheehan and W estfall 2004 , and references therein) ... O bservations of the phenomenon (e.g. Green and C ook 17 7 1; see fig- black drop ex tension in both cases (figures 2 and 3). ... Furthermore,...
... Archives . ... If you do not mind the time predictor, it is hard to believe that this is a light curve, time dependent data. ... It?s hard to say this data set is designed for time series analysis apart from the complication in statistical inference due to measurement errors. How to design the statistical study with measurement errors, huge gaps in time, and unequal time intervals is complex and unexplored. ... The following is R output without measurement errors. ... Chandra Blog . ...
... Space Telescope Science Institute and Johns Hopkins University . A multidisciplinary course exploring the origins of life, planetary formation, Earth's evolution, extrasolar planets, habitable zones, life in extreme environments, the search for life in the Universe, and space missions. DiRuggiero, Norman, and others, 3 credit hours. ... The JHU Department of Earth and Planetary Sciences also offers courses that may be of interest to students interested in astrobiology: . ...
... xmmtrack . ... xmmtrack is an interactive IDL application that visualizes the orbit and attitude data in an ODF in the form of a 3-D animation sequence. The presented scenery includes an astronomically accurate simulation of the Earth-Sun system plus the actual and predicted trajectory of the XMM satellite on its path around the Earth. ... Please note: XMM's orbit is highly time variable and the predicted orbit will significantly deviate from the actual trajectory if the reference epochs differ. ...
Astronotes Armagh Planetarium's Stellar Blog! ... Moon . ... Space Flight . ... On 31 January 1971, Alan B. Shepard Jr. was NASAв?Ts oldest and most senior astronaut- but also one of its least experienced. ... Similarly, at that time the Apollo program of lunar exploration was in trouble. ... Shepard signed up for the surgery.В By May 1969, Shepard convinced the very conservative flight surgeons of NASA that he was completely recovered and he began training to command Apollo 13. ... Astronotes . ...
... Here T is the index set, is the spatial process, is a realization of the process. ... A usual spatial point process is defined as (i.e., the index set is the points of ) or [the number of points within A ]; (i.e., the index set is the units of ), where both and T are random. ... The most important application of lattice models is statistical modeling of spatial images, which is widespread in astronomical image processing (restoration, segmentation, classification, reconstruction, etc.) ...
This list, not necessarily complete, contains all those publications known to us reporting on results of work using Arecibo instrumentation. ... Araya, E., Hofner, P. Churchwell, E., and Kurtz, S., Arecibo Observations of Formaldehyde and Radio Recombination Lines Toward Ultracompact HII Regions , Astrophys. ... 138, 63, 2002. Araya, E., Hofner, P. Churchwell, E., and Kurtz, S., Arecibo Observations of Formaldehyde and Radio Recombination Lines Toward Ultracompact HIII Regions , American Astron. ...
Observing sessions Dippach . We will meet every first Saturday each month. Meeting point will be on the parking in front of the railway station in Dippach-Gare. ... Only under clear skies . ... at: Clubroom 05:30 pm . ... Observation session . ... Meeting point: Dippach-Gare . ... AAL Facebook site . ... O Farol 72,rue Jean Jaures L-3490 Dudelange 05:00 pm . ... Meeting point: Parc Leh Dudelange . ... Meeting point: Dippach-Gare / side Dippach . ... Meeting point: Clubroom Dudelange . ...
Michele Bannister . Other research . ... The mutual events of Haumea . The dwarf planet Haumea is the parent of a collisional family that includes its two moons, Hi'iaka and Namaka. ... The arid and windswept McMurdo Dry Valleys of Antarctica are carpeted with the polygons of patterned ground , a geological formation that is also seen on the northern plains of the planet Mars. ... I worked to understand the influence that buried masses of ice have on the development of patterned ground. ...
... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... les plus belles images de l'Univers d†йcrypt†йes pour vous . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Japon : le tsunami vu depuis lтАЩespace . ... Rapidement apr†иs le s†йisme survenu au Japon le 11 mars 2011, les satellites d'observation de la Terre ont pu constater les d†йg†вts. ...