The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The term "astronaut" derives from the Greek words meaning "space sailor," and refers to all who have been launched as crew members aboard NASA spacecraft bound for orbit and beyond. Since the inception of NASA's human space flight program, we have also maintained the term "astronaut" as the title for those selected to join the NASA corps of astronauts who make "space sailing" their career profession. ...

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• Astronaut Bio: Peter J. K. Wisoff 11/2001
• Astronaut Bio: Jay Apt 06/1997
• Astronaut Bio: Jerry Ross (05/2014)

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

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• Latest News
• Web Site Updates 2008
• Armagh Observatory

... Credit: DMR , COBE , NASA , Two-Year Sky Map Explanation: Above is a microwave image of the entire sky. ... After computer processing to remove contributions from nearby objects and the effects of the earth's motion , the map shows temperature variations in the early Universe as red "spots". These spots are the oldest, most distant structures known. ... Publications with keywords: microwave - COBE . Publications with words: microwave - COBE . ... Microwave Hotspots: The Oldest Structures Known ...

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• Астронет > Looking Back on an Eclipsed Earth
• Астронет > Looking Back at an Eclipsed Earth
• Астронет > Looking Down on Saturn

... We discuss the application of the Pixon Based Image Restoration Method on spectroscopic HST data and compare the results with those obtained from the Richardson-Lucy and Jansson algorithms. In order to better evaluate the performance of the various algorithms we have also used artificial data. Keywords: Spectral restorations, Pixons, Richardson-lucy, Jansson . ...

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• Window-Based Applications
• A Search for Variable Stars based on the HST-Fine Guidance Sensor Photometry
• Diplas et al.: Pixon Based Restoration of HST Spectra

... Up: Science Software Applications . ... It has extensions for creating GUI (Tk) and object-oriented ([incr tcl]) applications. Several Tcl-based tools that may be used for astronomical and other scientific applications have been created and are discussed. One example is ptcl , which registers PGPLOT functions as Tcl commands, creating a powerful interactive plotting package. ... Both programs use the same C code, Tcl commands, and [incr tcl] classes; only the GUIs are different. ...

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• A Python-based IRAF Task Parameter Editor
• A System for Web-based Access to the HSOS Database
• POW: A Tcl/Tk Plotting and Image Display Interface Tool for GUIs

... Planets . ... The planets were found using the HARPS instrument on the 3.6m telescope at ESOтАЩs La Silla Observatory. ... A planet in orbit around a star causes the star to regularly move towards and away from observers on Earth. ... One newly discovered planet, HD 85512 b, is best hope found so far for a habitable exoplanet. ... The HARPS team so far have found that about 40% of stars similar to own Sun have at least one planet smaller than Saturn (which is 95 times more massive than Earth). ...

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• Monthly Sky Notes | Astronotes - Part 3
• Stargazing in June | Astronotes
• observing | Astronotes - Part 2

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. February 27, 1998 . Solar Eclipse: A Composite View . ... The central direct image of the solar surface was recorded yesterday by the Extreme Ultraviolet Imaging Telescope on board the space based SOHO observatory. ... The surrounding view of the eclipsed Sun reveals the gleaming solar corona , visible to ground based observers during totality. ...

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• APOD: 2012 August 29 - A Dark Earth with a Red Sprite
• APOD: 2012 May 30 - Looking Back at an Eclipsed Earth
• APOD: 2008 February 28 - ISS: Sunlight to Shadow

... Northern Eurasian GOFC/GOLD Fire Network Workshop in support of the Northern Eurasia Earth Science Partnership Initiative ( NEESPI ) . Satellite-based fire monitoring network in Northern Eurasia: Methods, Data Products, Applications . ... Operational systems of fire monitoring and fire situation in Northern Eurasia (Issues of system building and functioning, fire situation, available data and problems) . ... Marchenko N., Landscape-ecology methods for forest fires monitoring in Northern Eurasia. ...

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• Main research and development work completed in 2009 and ready for
• Main research and development work completed in 2012 and ready for
• Space Research Institute (IKI) Seminar

... Often it is convenient to edit one visibility dataset (``the template''), and then to apply the flagging from this to another. For example, forming and flagging a ``channel-0'' dataset might be less painful than flagging a huge spectral line dataset. ... The task that can do these sorts of operations if uvaflag - it matches visibilities in the template and the input, and flags those visibilities in the input that are flagged in the template. ... Dataset to be flagged. tvis=multi.chan0 . ...

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• Outreach
• Pulsar group | Main / Visitors
• Step 2: Rms-based flagging

... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. Cluster Launch of Dnepr LV 22 August 2013 KOMPSAT-5 Launch 21 November 2013. Dnepr Cluster Mission 2013 19 June 2014. ... ISC Kosmotras announces signing of a launch contract with T B?TAK Space Technologies Research Institute (T B?TAK UZAY) for injection of RASAT spacecraft - the first Earth observation satellite designed and manufactured in Turkey by Dnepr LV in 2010. ... Dnepr LV Performance . ...

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• Dnepr LV with THEOS SC Blasts off from Yasny Launch Base.
• The national Earth remote sensing spacecraft of Ukraine will be placed into
• ISC Kosmotras will provide launch services for two Earth-observation satellites

... August 30, 1999 . Looking Back on an Eclipsed Earth . ... Explanation: Here is what the Earth looks like during a solar eclipse. ... Only observers near the center of the dark circle see a total solar eclipse - others see a partial eclipse where only part of the Sun appears blocked by the Moon . This spectacular picture of the 1999 August 11 solar eclipse was one of the last ever taken from the Mir space station , as Mir is being decommissioned after more than ten years of productive use. ...

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• Apache IP-based Virtual Host Support - Apache HTTP Server
• APOD: February 7, 1998 - COBE Hotspots: The Oldest Structures Known
• Lunar Orbiter to the Moon (1966 - 1967)

... The Russian Academy of Sciences, Federal Space Agency (ROSCOSMOS), the Ministry of Defense of the Russian Federation, the Ministry of Communications and Mass Media of the Russian Federation (MINCOMSVYAZ), Federal Agency on Technical Regulating and Metrology (ROSSTANDART), Federal Service for State Registration , Cadaster and Cartography (ROSREESTR), Scientific Council of the Russian Academy of Sciences on PNT problem and the ... Ipatov А. V. (Institute of Applied Astronomy of RAS) ? ...

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• IAA EOP Service
• Keywords_55
• NAA 2011-2012 (preface)

... Posts tagged ?model based? ... arXiv:stat.ME:0910.2585] . Variable Selection and Updating In Model-Based Discriminant Analysis for High Dimensional Data with Food Authenticity Applications . ... Category: Algorithms , arXiv , Cross-Cultural , Data Processing , Jargon , Methods , Spectral , Stat | ... Tags: bimodality , chi-square minimization , Classification , CMD , Estimation , machine learning , massive data , model based , PCA , spectral analysis , spectroscopic , survey , VO . ...

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• SAO REU Summer Intern Program
• The AstroStat Slog 2009 February
• The AstroStat Slog Blog Archive How to subscribe to the arXiv email list...

... Laboratory for Spectroscopy of Molecular Structures . ... News . ... A new article entitled Description of optical properties of cholesteric photonic liquid crystals based on Maxwell equations and Kramers-Kronig relations has appeared in Physical Review E. Congratulations to Grigoriy Ksyonz on his first publication! . 25 th February 2013 . ... 22 nd November 2012 . ... 22 nd February 2012 . 4 th Workshop on Liquid Crystals for Photonics 2012 will take place in Hong Kong December 9-11, 2012. ...

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• Chair of MIPT in ISSP RAS, Chernogolovka
• Homepage of Denis Bulaev - Talks

... The Australian National University] [Department of Physics] [Paul Francis] [Main Roleplay Page] . These exercises are my attempt to adapt the technique of Problem Based Learning to the context of introductory astronomy and astrophysics classes. ... As students grapple with the puzzle, they are forced to learn the subject matter of the course. ... This exercise is designed for 1st year University students with a reasonable high-school background in Maths and Physics. ...

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• Designated Observatory Application
• IAU Commission #34 (Interstellar Matter)
• THE AUSTRALIAN NATIONAL UNIVERSITY

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Puerto Rico is in a highly desirable location from a global geodetic VLBI point of view.?а It is located on the Caribbean plate, and it is near the equator.?а A geophysical goal of the next generation geodetic observing system is to have at least one observatory on each tectonic plate, and Arecibo will provide this with the implementation of the broadband signal chain on the 12m antenna.?а A second benefit of the site is to ...

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• PRCZ table
• REU Application Instructions
• radioastron

Catastrophism : . ... During the late 18th and early 19th century, a German mineralogist, Abraham Gottlob Werner, proposed that all of the Earth's rocks were formed by rapid chemical precipitation from a "world ocean," which he then summarily disposed of in catastrophic fashion. Though not directed toward the genesis of landforms in any coherent fashion, his catastrophic philosophy of changes of the Earth had two major consequences of geomorphic significance. ... Thermal Plate Tectonics : . ...

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• Galileo and Orbits
• Formation of the Earth's Moon
• University of Oregon Center for High Energy Physics - Recent Experimental Talks

... InformChaos Lab took part in CeBIT-2015 (Hannover, Germany) with "Active Ultra Wideband Wireless Networks". ... Lev Kuzmin received Dr.Sci. degree for his thesis "Wireless information transmission over UWB chaotic carrier" from IRE RAS. ... Artem Nikishov received Ph.D. degree from the Moscow Institute of Physics and Technology for the thesis "Generation of microwave chaotic oscillations in self-oscillating systems with several active elements". ... Our Products page is renewed. ... News | ...

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• Remote Sensing of the Earth and Atmosphere. IRE RAS
• Project 1 - SfP - Ovsyannikov, Supersensitive high-Tc superconducting
• Research Activities of InformChaos Lab.

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Since the Irkutsk IS radar is based on station "Dnepr", which was not intended for IS measurements, we made a serios effort to modernize this station in order to carry out ionospheric observations. Four main directions of the development of the radar experimental base: . modernization of the radar receiving system; . development of primary processing and measurement control methods; . ...

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• East Siberian Center for the Earth's Ionosphere Research. Problems of the IS
• East Siberian Center for the Earth's Ionosphere Research. Modelling, secondary
• East Siberian Center for the Earth's Ionosphere Research. Back-scattering