http://www.ntis.gov/rss/RSSNTISCategoryList.aspxNational Technical Reports Libraryen(c) 2008, National Technical Information Service. All rights reserved.5http://www.ntis.gov/images/logoRSS.jpghttp://www.ntis.govBefore there is a funded space mission, there must be a present need for the mission. Space science and exploration are expensive, and without a well-defined and justifiable need, no one is going to commit significant funding for any space endeavor. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001800No abstract available. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001685No abstract available. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000647No abstract available. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001667Earth-based radar images of Mercury show radar-bright material inside impact craters near the planet s poles. A previous study indicated that the polar-deposit-hosting craters (PDCs) at Mercury s north pole are shallower than craters that lack such d ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001619Absolute dating of planetary samples is an essential tool to establish the chronology of geological events, including crystallization history, magmatic evolution, and alteration. Traditionally, geochronology has only been accomplishable on samples fr ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000588While a great deal of effort goes into planning and executing successful mission operations, it is also important to consider the End of the Mission during the planning, design, and operations phases of any mission. Spacecraft and launch vehicles mus ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000278We present evidence from a sample of 544 galaxies from the DEEP2 Survey for evolution of the internal kinematics of blue galaxies over 0.2 < z < 1.2. DEEP2 provides a large sample of high resolution galaxy spectra and dual-band Hubble imaging f ...http://www.ntis.gov/search/product.aspx?ABBR=N20120012551The Full-sky Astrometric Mapping Explorer (FAME) is a MIDEX class NASA Explorer mission that will perform an all-sky, astrometric survey with unprecedented accuracy. FAME will produce an astrometric catalog of 40 million stars between 5th and 15th ma ...http://www.ntis.gov/search/product.aspx?ABBR=ADA572070Solar drivers of severe space weather can be predicted from line-of-sight magnetograms, via a free-energy proxy measured from the neutral lines. This can be done in near real time. In addition to depending strongly on the free magnetic energy, an act ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001897No abstract available. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001906No abstract available. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001743Locating low frequency radio observatories on the lunar surface has a number of advantages, including positional stability and a very low ionospheric radio cutoff. Here, we describe the Radio Observatory on the lunar Surface for Solar studies (ROLSS) ...http://www.ntis.gov/search/product.aspx?ABBR=N20120001921In this paper we study the performance of the Lustre file system using five scientific and engineering applications representative of NASA workload on large-scale supercomputing systems such as NASA s Pleiades. In order to facilitate the collection o ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001600It has been found previously, by measuring from active region magnetograms a proxy of the free energy in the active region fs magnetic field, (1) that there is a sharp upper limit to the free energy the field can hold that increases with the amount o ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001677We present limits for the compactification scale in the theory of Large Extra Dimensions (LED) proposed by Arkani-Hamed, Dimopoulos, and Dvali. We use 11 months of data from the Fermi Large Area Telescope (Fermi-LAT) to set gamma ray flux limits for ...http://www.ntis.gov/search/product.aspx?ABBR=N20120016756For mature active regions, an active region s magnetic flux content determines the maximum free energy the active region can have. Most Large flares and CMEs occur in active regions that are near their free-energy limit. Active-region flare power rad ...http://www.ntis.gov/search/product.aspx?ABBR=N20120016422We have investigated the onset and acceleration of coronal mass ejections (CMEs) and eruptive flares. To isolate the eruption physics, our study uses the breakout model, which is insensitive to the energy buildup process leading to the eruption. We p ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001651No abstract available ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000586The National Aeronautics and Space Administration s (NASA s) Space Launch System (SLS) Program, managed at the Marshall Space Flight Center, is making measurable progress toward delivering a new capability for human and scientific exploration. To arr ...http://www.ntis.gov/search/product.aspx?ABBR=N20120016428No abstract available. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000628The Crab Nebula and its pulsar has been the subject of a number of detailed observations with the Chandra X-ray Observatory. The superb angular resolution of Chandra s high-resolution telescope has made possible numerous remarkable results. Here we d ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001609Topics: (1) The geometry of the system: The pulsar might not be where you thought it was. (2) Pulse phased spectroscopy, a challenge for the theorists. (3) Correlations with the gamma-ray flaring. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000639If all the library books and journals can be viewed on your desk top, why come to the physical library. The USNO Library tried to bring the patrons inside the library. One method was to rotate rare book displays each month. As the library holds a fab ...http://www.ntis.gov/search/product.aspx?ABBR=ADA571999No abstract available. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001719Analysis is presented for times during a space mission that specified solar proton flux levels are exceeded. This includes both total time and continuous time periods during missions. Results for the solar maximum and solar minimum phases of the sola ...http://www.ntis.gov/search/product.aspx?ABBR=N20120013761This paper investigates the possible application of periodic orbit control maneuvers for so-called evolved-LISA (eLISA) missions, i.e., missions for which the constellation arm lengths and mean distance from the Earth are substantially reduced. We fi ...http://www.ntis.gov/search/product.aspx?ABBR=N20120016407Over the last five decades there have been numerous studies devoted to developing, launching and conducting a manned mission to Mars by both Russian and U.S. organizations. These studies have proposed various crew sizes, mission length, propulsion sy ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000620The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the Cosmic Microwave Background, targeting the imprint of inflationary gravitational waves at large angular scales ( approx 1 deg.) . Between 2008 October and 2010 December, tw ...http://www.ntis.gov/search/product.aspx?ABBR=N20120016412Alkali-rich igneous fragments were identified in the brecciated LL-chondrites, Kr henberg (LL5), Bhola (LL3-6) and Yamato (Y)-74442 (LL4), and show characteristic fractionation patterns of alkaline elements. The K-Rb-Cs-rich fragments in Kr henberg, ...http://www.ntis.gov/search/product.aspx?ABBR=N20120017925The Oxygen and Volatile Extraction Node (OVEN) is a subsystem within the Regolith &; Environment Science and Oxygen & Lunar Volatile Extraction (RESOLVE) project. The purpose of the OVEN subsystem is to release volatiles from lunar regolith and extra ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000835NASA s goals include objectives for robotic and human spaceflight: (a) Implement a sustained and affordable human and robotic program to explore the solar system and beyond; (b) Extend human presence across the solar system, starting with a human ret ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001563NASA's Research and Technology Studies (RATS) team evaluates technology, human-robotic systems and extravehicular equipment for use in future human space exploration missions. Tests are conducted in simulated space environments, or analog tests, usin ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000646We present the first observation of magnetic fluctuations consistent with Short Large-Amplitude Magnetic Structures (SLAMS) in the foreshock of the planet Venus. Three monolithic magnetic field spikes were observed by the Venus Express on the 11th of ...http://www.ntis.gov/search/product.aspx?ABBR=N20120016402No abstract available. ...http://www.ntis.gov/search/product.aspx?ABBR=N20130001903Fission Power Systems have long been recognized as potential multi-kilowatt power solutions for lunar, Martian, and extended planetary surface missions. Current heat rejection technology associated with fission surface power systems has focused on ti ...http://www.ntis.gov/search/product.aspx?ABBR=N20130000427Observations of Enceladus have revealed active jets of material erupting from cracks on its south polar surface. It has previously been proposed that diurnal tidal stress, driven by Enceladus' orbital eccentricity, may actively produce surface moveme ...http://www.ntis.gov/search/product.aspx?ABBR=N20120014166