Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 21 - 28.12.2015 г., Forecast on 28.12.2015 - 03.01.2016, Carrington Rotation 2171 (28,17.11.2015) SUNSPOT-FORMING ACTIVITY OF THE SUN REMAINED AT THE MIDDLE LEVEL. ... ON THE VISIBLE SOLAR DISK 4-2 QUITE SUNSPOT GROUPS, ONE WAS BIG, HAVE BEEN OBSERVED. IN THE LAST 21 - 24.12 FIVE SOLAR FLARES OF MIDDLE CLASSES WERE OCCURENCE. ... FLARE ACTIVITY 21 -24.12 WAS AT THE MIDDLE LEVEL AND IN OTHER DAYS - ON THE LOW LEVEL. ...

... The author of the cover picture is Vasilisa Verkhodanova. The picture symbolizes our perception of the world. The modified emblem of the SAO unifying the 6-m optical telescope and the raditelescope RATAN-600 of SAO RAS is placed in the center of the radio galaxy isophotes. From the one hand, we can investigate the properties of radio galaxies with these (and other) telescopes, and try to study physical processes providing their activity. ...

THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE BY MEANS OF DIGITAL MODELS. ... The surface brightness of Mercury was measured Danjon (1933, 1949, 1953) and Harris (1961) in phase angle 3o-123o. The analysis of the various data of the integral photometric gives the results of determination of the main photometric constants for Mercury. ... THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE: S.G. Pugacheva The surface brightness of the Mercurian images was established on the geologic map Mercury. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Planets . ... Perhaps PlutoтАЩs surface is not old and dead? ... Mercury is the most heavily cratered planet in our Solar System. ... Venus . ... Mars . ... A voyage through the Solar System. ... As we patiently wait for more images to be released of Pluto and its moons from the New Horizons mission, we are left wondering how interesting and different the planets in our Solar System are and how much more there is still to discover. ...

Trudy GAISH, vol. LXV, 1996 . Abstracts . The global distribution of average (5 O x 5 O ) depths . of Mohorovicic discontinuity on the Earth . ... Such analysis allows detecting whether the sources of the largest anomalies reside within the Earth's core. This is possible if the limit depths of the sources exceed the depths of the core-mantle boundary. ... by Pasinok S.L. Influence of the Earth’s cover on the polar free oscillation of the Earth’s inner core is considered. ...

... Dust in Nuclei of Galactic Bulges . ... WFPC2 of 20 nuclei of nearby galactic bulges of types S0-Sbc. ... Bulges of spiral galaxies are generally seen as small elliptical galaxies in the center of a large spiral. ... Here we show first results of a color study of the centers of galactic bulges. ... With these three bands we can make the red I - H color, primarily sensitive to extinction by dust and old stellar population gradients, and the B - I color, especially sensitive to recent star formation. ...

. Suppose the system fails while you are editing a file! You can recover the file when you next log on to the system again by using the -r option to the vi command. For example: vi -r help.xdh . This restores the vi buffer for the file help.xdh to exactly the state it was in immediately before the system failed. You can continue to edit the file or write the contents of the buffer to the file.

... This method is based on putting space modules, vehicles and EVA-suit donned cosmonauts in the swimming pool under conditions of neutral buoyancy, indifferent equilibrium and unsupported state. ... You can also dive into the swimming pool with the SCUBA equipment in order to examine the mock-ups of space stations and vehicles and pass a course of rehabilitation in a hyperbaric oxygenation complex. ... Services / Hydrospace: General description Technical description "Orlan" suit Photo gallery Price . ...

... About meteorites . ... Meteoritic data . Meteorite Encyclopedia . ... About laboratory . ... In addition, meteorites are divided into falls and finds depending on how they were collected. ... In other words, by far most meteorites falling on Earth are chondrites. Finds are meteorites that were not seen to fall but were subsequently discovered on the ground, often long after they landed. ... The vast majority of meteorites in museum and private collections around the world are finds, not falls. ...

TOOLS OF TEST GENERATION FOR SATELLITES CONTROL PROGRAMS Andrey Tyugashev, Ekaterina Myasnikova, Elena Sopchenko S.P. Korolyov Samara State Aerospace University (National Reseach University) The paper presents a research in the field of test automation for testing spacecraft control programs. ... Programmers or designers of spacecraft systems write tests manually. ... Tests are carried out by issuing the control actions on the spacecraft and condition monitoring systems parameters of the spacecraft. ...

... Research of an atmosphere of the Earth and other planets of Solar system by optical methods . ... The long-term experience of study of atmospheres of planets of Solar system in a department of physics of planets has defined directions and methods of researches spent for laboratory . ... The tasks of laboratory are researches by optical methods of structure of a Terrestrial atmosphere, namely study of spectra of absorption of its compound radiation of natural and artificial sources. ...

... Cooling and thermal control system (CTCS):an angle between normal of thermal radiator plane (Z-axis) and vector "SC-Sun" must exceed 90 deg.. ... The axes of the first two sensors are in the plane YOZ; they have an angle of 35 degrees with Y and -Y axis being inclined to the direction of -Z axis. ... 30 degrees for Sun; . ... An angle between +Z-axis and direction to the Sun center must exceed 90 degrees. ... An angle between direction "SA-Sun(center)" and XOZ plane must not exceed 30 degrees. ...

... The choice of the spectrograph design (Fig.2) is determined by the quantity R, the overall dimensions of the PF cage and the restrictions on the rigidity of the structure of the device. ... As the camera's objective a fast 4-lens aplanat is used having a focal distance F cam =140 mm and a relative aperture of 1:1.8, the resolution at the centre is no less than 80 gr/mm, that over the field at a distance of 3 mm from the edge along the frame ( ) diagonal is 35 gr/mm. ...

Электронная библиотека астронома-любителя. ... архив RSN . ... Апрель 1998 . ... Дата: 10 апреля 1998 (1998-04-10) От: Alexander Bondugin Тема: Galileo Update - April 9, 1998 Привет всем! ... Дата: 10 апреля 1998 (1998-04-10) От: Alexander Bondugin Тема: Mars Global Surveyor Update - April 9, 1998 Привет всем! ... The feature known as the "Face on Mars" in the Cydonia region was imaged quite successfully on April 5th and its image was released in raw form and in an enhanced form on April 6th. ...

... Heracles Triplane and Aerospace Systems . The key characteristics of two-stage aerospace systems are determined according to speed and carrying capacity of the aircraft-carrier used . ... So the SPIRAL system hypersonic carrier was expected to launch the second stage by weight 63 tons at a speed corresponding to 6M; whereas launching weight of the MAKS system orbital stage with the use of the An-225 MRIYA heavy subsonic aircraft reaches 275 tons, and the HERACLES aircraft - 450 tons. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Although their determination is based on the scattering process model, independent check-ups by rocket experiments have shown their correctness in experimental applications. ... Ionospheric data analysis, especially during strong disturbances, cannot be without some other kinds of diagnostic tools. ... The lack of data has always been a challange in this case. ...

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... Bad Astronomy . ... On Thursday, February 15th 2001 (and replayed on March 19), the Fox TV network aired a program called ``Conspiracy Theory: Did We Land on the Moon?'', hosted by X-Files actor Mitch Pileggi. ... Dust around the lander . ... However, it appeals to our common sense: when the sky is black here on Earth, we see stars. ... Bad: The program claims that when the top half of the lander took off from the Moon to bring the astronauts back into orbit, there was no flame from the rocket. ...

... The Influence of Galactic Aberration on Precession Parameters Determined from VLBI Observations Z. M. Malkin* Main (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia Received December 25, 2010; in final form, April 11, 2011 Abstract--The influence of proper motions of sources due to Galactic aberration on precession models based on VLBI data is determined. ... Proper motions of sources due to GA in Galactic (left) and equatorial (right) coordinates. ... R. Astron...

... arXiv.org . astro-ph . ... We fit the near-infrared to radio spectral energy distributions of 30 luminous and ultra-luminous infrared galaxies with pure starburst models or models that include both starburst and AGN components to determine important physical parameters for this population of objects. In particular we constrain the optical depth towards the luminosity source, the star formation rate, the star formation efficiency and the AGN fraction. ...