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: Robert L. Stewart

... 2012 November 8 . Arp 188 and the Tadpole's Tail . ... Explanation: In this stunning vista , based on image data from the Hubble Legacy Archive, distant galaxies form a dramatic backdrop for disrupted spiral galaxy Arp 188, the Tadpole Galaxy. ... One story goes that a more compact intruder galaxy crossed in front of Arp 188 - from right to left in this view - and was slung around behind the Tadpole by their gravitational attraction. ... About APOD | ... A service of: ASD at NASA / GSFC . ...

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• APOD: 2011 November 11 - In the Arms of M83
• APOD: 2014 August 25 - Arp 188 and the Tadpole's Tail
• APOD: 2007 November 28 - Comet Holmes from the Hubble Space Telescope

... The Arms of M106 . ... Credit Copyright: Image Data - Hubble Legacy Archive , Robert Gendler, Jay GaBany, Processing - Robert Gendler Explanation: The spiral arms of bright galaxy M106 sprawl through this remarkable multiframe portrait , composed of data from ground- and space-based telescopes . ... Typical in grand spiral galaxies, dark dust lanes, youthful blue star clusters, and pinkish star forming regions trace spiral arms that converge on the bright nucleus of older yellowish stars. ...

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• Arp 188 and the Tadpole s Tail
• Star Forming Region Hubble X
• NGC 253: Close Up

... Star-Forming Histories Based on Deep Redshift Surveys . ... Missions . ... Future Missions and . ... Missions Office . ... Simon Lilly In this session, I thought we would review what we have learnt about the faint (observed) galaxy population at high redshifts. ... There is then also the more speculative aspect of what we are looking at at the fainter levels (HDF, faint clustering etc etc.) ...

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• NICMOS to Ground Based Systems Transformations
• An Empirical Pixel-Based Correction for Imperfect CTE . I. HST's Advanced
• How accurate is the pixel-based CTE correction?

... Public . Science . ... Science Users Information > Observing with ESO Telescopes > Policies and Procedures > Publications with ESO Data . ... Observing with ESO Telescopes . ... Public Surveys . Publications with ESO Data . ... Large Programmes . ... ESO/GTC Programmes . Public Surveys Programmes . ... Phase 1 Proposals . ... Public Surveys Phase 2 . ... Publications making use of ESO observational data must include the following statement in a footnote or in the acknowledgement: . ...

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• The hidden fires of the Flame Nebula* | ESO
• ESO - Revised Acknowledgement for Publications Based on ESO Data
• ESO - Other Bibliographies

. Please use the following for publications and media citations: . "Based on observations obtained with Apache Point Observatory's 0.5-m Astrophysical Research Consortium Small Aperture Telescope." . List of publications based on 0.5-m observations (TBD) . for questions or comments contact archive server .

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• Astrophysical Research Consortium - Apache Point Observatory

... 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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• Step 2: Rms-based flagging
• Semantic Interoperability
• Numerical simulations on the relative importance of starbursts and AGN in

... The history of star formation was successfully analyzed for the first time based on the spectra of the stellar population of dwarf galaxies of low surface brightness outside the Local Group. We have investigated the stellar population of two dwarf spheroidal galaxies KDG61 and KDG64 in the central part of a close group of galaxies M81. ... These galaxies are dominated by the old stellar population (12-14 billion years) of low metallicity ([Fe/H] ~ -1.5). ... KDG61 . ... KDG64 ...

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• Metagalaxy sector, archive 2010
• Zeiss-1000 telescope instrumentation

... STScI-PRC98-21 A BRIGHT RING OF STAR BIRTH AROUND A GALAXY'S CORE An image from NASA's Hubble Space Telescope reveals clusters of infant stars that formed in a ring around the core of the barred-spiral galaxy NGC 4314. ... This close-up view by Hubble also shows other interesting details in the galaxy's core: dust lanes, a smaller bar of stars, dust and gas embedded in the stellar ring, and an extra pair of spiral arms packed with young stars. ... However, they are older than those in the ring. ...

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• K-band Arcetri Obscured Supernova Search - What is the KAOSS Projrect?
• Hubble Reveals Stellar Fireworks Accompanying Galaxy Collision PRC97-34a
• A Bright Ring Of Star Birth Around A Galaxy's Core (PR98-21)

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

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• Data bases of Natural Satellites. Documentation. Sources
• Data bases of Natural Satellites. Documentation. Manual
• Data base of Natural Satellites. Documentation. Structure

... 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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• The galaxy M100
• CfA User Home Page
• ttkdraw: Tom's Tcl/Tk-based Drawing Program

01.1989 . ... 01.1990 . ... 01.1991 . ... 01.1992 . ... 01.1993 . ... 12.1994 . ... 01.1995 . ... Name of magnetic observatories with their geomagnetic co-ordinates . ...

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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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• The NMW survey homepage

... 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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• Microwave Scanning Radiometer-Polarimeter (MSRP)
• Space Research Institute (IKI) Seminar
• Prediction technique

... Dnepr launch record 17 August 2011. ... Baikonur Cosmodrome Yasny launch base Downloads . ... Yasny launch base is located in Orenburg Region, Russia. ... Admin & Hotel Complex including hotels, dining facilities and office premises; . Assembly, Integration and Test Building (AITB) incorporating clean room facilities and fueling station; . ... Yasny launch base AITB is divided into four main areas: Clean room 1 (CR1), Clean room 2 (CR2), Fueling Station and Offloading & Storage Area. ...

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• Preparation of Launch Campaign at Yasny Launch Base
• Dnepr LV with THEOS SC Blasts off from Yasny Launch Base.
• Kazakhstan delegation visits Yasny launch base

... Previous: Background Fluctuation Analysis from the Multiscale Entropy . ... A new measure of information is defined which is based on noise modeling and incorporates resolution scale. Properties of this measure are discussed. ... Additionally it allows for image noise modeling, and subsequent noise removal. ... Hence information- and entropy-based processing technologies will be necessary for the effective design and implementation of large, future generation, image databases. ...

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• The NOAO Web-based Observing Proposal System
• ADASS 2003 Conference Proceedings
• Tcl- and [Incr tcl]- Based Applications for Astronomy and the Sciences

... Meta Index / Home Page / Description There are three special file-based filters which perform filtering with Good Time Intervals, spatial image masks, and region tables. ... It must be in either of the four forms setname , setname+blockid , setname[blockid] , or setname:blockid where setname must be the name of an existing data set and blockid an identifier of a block in that data set. If the first form, setname , is used, the filter data are sought in the first block of the named data set. ...

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... 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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• IAU Commission #34 (Interstellar Matter)
• Problem Based Learning in Undergraduate Astronomy
• Role-Playing and Problem-Based Exercises for Teaching Undergraduate Astronomy

... What's new . ... The new version of the General Catalogue of Variable Stars (GCVS4.2) revised taking into account the new data accumulated since the 4th GCVS edition for the constellations: Canis Minor, Capricornus The new version of the GCVS ! ... The new version of the General Catalogue of Variable Stars (GCVS4.2) revised taking into account the new data accumulated since the 4th GCVS edition for the constellations: Apus, Cancer, Canes Venatici and Canis Major The new version of the GCVS ! ...

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... Use of a NOM profilometer to measure large aspheric surfaces , J. L. Pearson, G. W. Roberts, P. C. T. Rees, S. J. Thompson , Proc. SPIE vol. ... Advances in active x-ray telescope technologies, Atkins, Carolyn; Doel, Peter; Brooks, David; Thompson, Samantha ; Feldman, Charlotte; Willingale, Richard and 7 co-authors, Proc. SPIE vol 7437 (2009). ... A nickel-carbon-fibre composite for large adaptive mirrors: Fabrication methods and properties , S. J. Thompson , D. Brooks, and A. P. Doel, Opt. ...

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• Supernova Remnant (SNR) Catalogue or Catalog of Galactic SNRs
• NVSS Image ftp service Documentation Help for NVSS Image ftp service
• UK involvement in future ground-based B-mode and SZ experiments