... ARTICLE: The Adventurous Search For The Astronomical Unit . ... Kepler himself had suggested to use the rare occasions of Venus transiting (crossing) the solar disk to measure our distance to the planet. ... Due to the orbital inclination of Venus against the ecliptic of 3.5°, a Venus transit is so rare that it happens only at intervals of 121.5 years, 8 years, 105.5 years, 8 years and so on. ... Crabtree witnessing the transit of Venus 1639 . ... Transits of Venus - The Quest for the Solar Parallax...

... Tracking stations will be selected in accordance with the schedule issued daily by the General Operative Control Group (GOCG) in Lavochkin Association with the gaps in operations during spacecraft contact with the control stations (CS). ... Communication frequencies (carrier): high data rate information transmission downlink from the SRT ­ 15.000 GHz; uplink synchronization ­ 7.2075 GHz; downlink synchronization ­ 8.400 GHz. ...

... A General Summary of Sacramento Peak Weather, GRD Research Notes No. ... This report summarizes and discusses newly derived means for the period August 1954 through July 1974. ... Table 1 lists the monthly average maximum and average minimum temperatures for each of the years 1954 through 1974. ... Mean . ... Oct . ... Figure 6: Distribution of Mean Annual Precipitation, Sacramento Peak. ... Figure 9: Distribution of Mean Annual Precipitation, Sacramento Peak; Mount Peak; and Alamogordo, New Mexico ...

... The Sun has come all of one day away from breaking its record for the longest period of inactivity for the last decade - reaching a mid-summer low and falling into yet another state of "hibernation". Yesterday, on the first day of autumn, new sunspots appeared on the surface of the Sun following an absence of almost 50 days. ... The first low lasted 51 days, from 21 July until 11 September last year. ... Now, almost a year later, it seems the Sun has hit a new low almost as "deep" as the first. ...

. Christmas History Traditions Carols Celebration in UK Celebration in USA яhristmas Menu .

... Tonight's Sky . ... The Magazine . News . Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... Year of Pluto . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

G1.9+0.3 has been recently identified as the youngest known Galactic supernova remnant, about 150 years old at most. ... The Youngest Galactic Supernova Remnant: G1.9+0.3 . ... X-ray spectral variations in the youngest Galactic Supernova Remnant G1.9+0.3 . ... Radioactive Scandium in the Youngest Galactic Supernova Remnant G1.9+0.3 . ... Expansion of the Youngest Galactic Supernova Remnant G1.9+0.3 . ... Supernova Ejecta in the Youngest Galactic Supernova Remnant G1.9+0.3 . ...

... 30 ­ 50 mas) , , . ... 9 2005 . ... O-C) () . ... Khrutskaya E.V, Khovritchev M.Yu, Narizhnaja N.V, Izmailo v I.S. The observat ions of Machho lz comet in 2004-2005 years at the Pulkovo observatory. Minor Planet Circular 2005. ... The observat ions of minor planets in 2005 year at the Pulkovo observatory. ... The comet C/2004 Q2 was the first object of the astrometric observat ions (138 frames during 7 nights were obtained). The 37 asteroids of the main belt were observed in 2005- 2006 years. ...

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... Samara State Aerospace University Research Grants and support . Project Designing a range of gas-turbine engines on the basis of a high energy efficiency gas generator in cooperation with Kuznetsov plc within the framework of implementing the Russian Federation Government Order of 09.04.2010 No.218 Measures of state support of the development of cooperation between higher educational institutions and organizations implementing complex projects on high-technology production design . ...

... Instrumentation and methods . Schedule of observations: . II half-year 2015 . I half-year 2016 . Schedule archive . BTA proposal: . ... Observations logs and reports . ... BTA observation reports (ppt) . ... RATAN-600 proposal . RATAN-600 observation reports . ... instrumentation and methods . ... General observation data archive of SAO RAS . If you would like to visit Observatory for observations with our telescopes please contact Filippova Ekaterina . ...

. Webcams . Networking . Weather . Power . System health . Measurements . Sky status at Sun Apr 10 00:24:00 2016 is Clear Sky status at Sun Apr 10 00:24:00 2016 is Clear . Copyright 2007 2013.

... The 1997 conference of the Astronomical Data Analysis Software and Systems Conference series was organized by ST-ECF/ESO during 14 to 17 September, 1997. It was the first time this conference was held in Europe. ... Key topics of the conference were Computational Astrophysics, Computational Infrastructure, Future Technologies, Data Analysis Applications, Education and Public Outreach, Data Flow and Scheduling , Archives Information Services, and Astrostatistics/Data Bases. ...

... Space flight . ... Space Hotel . ... The program of deployment of small orbital station (SOS) consisting of a family of spacecrafts and module-spacecrafts represents a consecutive realization of flight scenarios with consecutive building up of functions. ... Scenario 1 - the regular and revised spacecrafts of class "Soyuz" - TMSC and MNMSC (MNMSC-cargo, MNMSC-MR) are used, pls. see fig fig.8 . ... The terms of transition to this scenario are determined by terms of readiness of one or another module....

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Site . Weather . Roof Status . ... Average Max. ... 0.0 . ... In 2004, the roof was operated manually, while in 2005 through 2007, it was operated automatically by computer, but was not closed by weather sensors. ... The "Closed" column includes those nights outside the Monsoon season when the Observatory was closed due to weather (the usual cause), equipment failures, or vacation by the Winer staff in 2004 through 2006. ...

... Twenty-Six Year Monitoring of Water Masers IAU Symposium 242, Alice Springs 1 Contents of the work A sample of H2O maser emission sources has been observed since 1980. ... Rudnitskij et al. ... Twenty-Six Year Monitoring of Water Masers IAU Symposium 242, Alice Springs 4 Maser in a protoplanetary disc (S255) Flux density, Jy S255: H2O line profile 5 February 2002 Radial velocity, LSR, km/s Rudnitskij et al. ... Twenty-Six Year Monitoring of Water Masers IAU Symposium 242, Alice Springs 12 ...

The Youth Space Center of Bauman Moscow State Technical University conducts the workshop for space enthusiasts (only students) every year to provide participants with an opportunity to discuss the results of the year passed in space focusing on Russian and International programs, see and touch the real space hardware and meet people working on the front edge of space science and technology. ... You will go to Mission Control Center and see how the International Space Station is controlled. ...

. About the project . News . Scientific program . Supersmall satellites . The map . Experimental data . Educational . program . Lectures "Life . of the Earth . in the Solar Atmosphere" . Space-physics lab exercises . Events . Conference UNIVERSAT-2009 . Project team . Contacts . References . The project is carried out with the information support of International Heliophysical Year .

... We researched the regions with latitude higher than 60° for both hemispheres of the Moon. 944 craters and 1119 craters with diameters larger than 10 km was considered for North and South polar regions respectively. ... The total number of craters with a wholly shadowed floor is 44 for the North polar region and 43 for the South polar region. 111 and 122 craters have a floor permanently shadowed less than 10% at the North and South poles consequently. ... PERMANENTLY SHADOWED AREAS. ...

Wave propagation in an irregular plasma . Methods of the ionospheric plasma radio sounding . ... Program, Grant No. ... Investigation of Anomalous Attenuation Effect Caused by Radio Wave Scattering and Transformation on the Ionospheric Irregularities . ... Grant No. ... Diagnostics of Ionospheric Irregularity Spectrum Using Measurements of Radio Wave Anomalous Attenuation Under Vertical Sounding . ... Simple numerical model of radio wave multiple scattering effects in the ionospheric plasma layer. ...