... Viking Images . ... Each spacecraft consisted of an orbiter and a lander. ... The first month of orbit was devoted to imaging the surface to find appropriate landing sites for the Viking Landers. On July 20, 1976 Viking Lander 1 separated from the Orbiter and touched down at Chryse Planitia. ... The Viking Landers transmitted images of the surface, took surface samples and analyzed them for composition and signs of life, studied atmospheric composition and meteorology, and deployed seismometers. ...

... 6.08.2001 . ... Credit: STS-103 , STScI , ESA , NASA Explanation: The Hubble Space Telescope (HST) is the largest orbiting public optical telescope in history. ... A larger Next Generation Space Telescope (NGST) may be launched as early as 2007. ... August 2001 . ... 2001 2002 . ... 2007 . ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: Hubble space telescope - telescope . Publications with words: Hubble space telescope - telescope . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2001 August 6 . The Orbiting Hubble Space Telscope . Credit: STS-103 , STScI , ESA , NASA . Explanation: The Hubble Space Telescope (HST) is the largest orbiting public optical telescope in history. ... A larger Next Generation Space Telescope (NGST) may be launched as early as 2007. ... About APOD | ... NASA Technical Rep.: ...

... Purpose: To measure changes to the properties of the data when the spectra are moved over a range of cross-dispersion and dispersion positions. Description: This program will obtain COS FUV spectra of external targets at a range of cross-dispersion and dispersion positions in order to evaluate the optical performance of the spectrograph at different lifetime positions. ... Link to Cycle 17 Science # Use the GO + GTO Phase 1 exposure listing and derived statistics # posted on WWW. ...

... Click on an object in the solar system or choose from the list at left to learn more . The Arecibo Observatory planetary radar is the world's most powerful instrument for post-discovery characterization and orbital refinement of near-Earth objects. ... The Solar System Studies group is a department of the Arecibo Observatory, which is an NSF facility operated under cooperative agreement by SRI International, Universities Space Research Association (USRA), and la Universidad Metropolitana (UMET). ...

... Orbiter . Payload of the Orbiter . ... the instruments . ... ORBITER . Index . Instrument . Mass (kg) . ARGUS . ... visible and IR mapping spectrometer . ... planetary IR Fourier spectrometer . ... mapping visible and thermal radiometer . ... mapping high-resolut. spectrophotometer . ... multichannel optical s spectrometer . ... quadrupole mass-spectrometer . ... fast omnidir. energy-mass ion analyzer . ... wave complex . ... platform for ARGUS instruments . ... MASS-MEM . ...

The orbital period of a satellite increases as its mean distance from Earth grows. The space shuttle in a low altitude circular orbit, just above the atmosphere, completes one circuit in about 90 minutes. ... If you have a suitable calculator, you can easily chek the value of T for R=6.6] A satellite orbiting above the equator at that distance keeps its position above the same spot on the ground; hence this is known as the synchronous orbit, from the Greek syn--same, chronos--time. ...

... Search . ... Astrophysics Group . Research . ... Research and Instrumentation . ... While this seems an extraordinary endeavour, in light of what we have learnt about Solar System planets, only a handful of key ingredients are required to start characterising an exoplanet. ... The NGTS project is a partnership between the University of Cambridge, Queen?s University Belfast, University of Warwick, University of Leicester, Observatoire de Geneve, DLR (Berlin) and Universidad Catolica de Chile. ...

sas-uploads-admin@xmm.vilspa.esa.es sas-uploads-admin@xmm.vilspa.esa.es . ... Previous message: [sas-uploads] SAS manifest releasetrack [xmmsas_20010607_1900] uploaded . ... Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] . Package orbit-2.7.tgz (4044 kB) Uploaded by Brendan Perry < bhp@star.le.ac.uk > The most recent entry in ChangeLog is: orbit/ChangeLog ChangeLog for orbit =============================== Version 2.7 - 01-06-06 ------------- - Fixed bug in layout file. ...

The efficiency of interaction of radiation with a particle and hence its optical properties depend on the particle chemical composition, size, shape, structure, etc. ... Particle size expressed in units of the wavelength of incident radiation, together with chemical composition, most strongly affects the optical properties of a scatterer. ... There are many methods to solve the light-scattering problem for a homogeneous spheroid (our survey of the light-scattering methods see here ). ...

Next: The ``Reflection'' Effect Up: Ejectors in Massive Binary Previous: The Radiopulsar PSRB1259-63 - a . The radiopulsar PSRB1259-63 in a massive binary has an extremely high eccentricity (Johnston et al. ... We have assumed that explosion occurs at a random moment on the orbit and all the mass thrown off by a star instantly leaves the system because the characteristic velocity of matter from the exploded star is much higher than the orbital velocity. ...

... Mars . ... News . ... NASA's newest Mars mission spacecraft enters orbit around the Red Planet . ... On September 21, 2014, NASA's MAVEN space