NASA

  • Most Topular Stories

  • Expedition 31 Trio Blasts Off for International Space Station

    Space Shuttle and International Space Station News
    13 May 2012 | 11:00 pm
    The Soyuz spacecraft launched at 10:01 p.m. CDT.

  • NASA Lends Galaxy Evolution Explorer to Caltech

    NASA Breaking News
    15 May 2012 | 11:00 pm
    NASA is lending the Galaxy Evolution Explorer (GALEX) to the California Institute of Technology (Caltech) in Pasadena, where the spacecraft will continue its exploration of the cosmos.

  • 05-16-2012

    ISS Status Reports
    15 May 2012 | 11:00 pm

  • Kepler Mission Manager Update

    Kepler News and Features
    14 May 2012 | 11:00 pm
    April was a momentous time for the mission! The team received approval for a mission extension through fiscal year 2016.

  • A Supernova Cocoon Breakthrough

    Chandra X-ray Observatory Images
    14 May 2012 | 11:00 pm
    Observations with NASA's Chandra X-ray Observatory may help astronomers understand why some supernovas are much more powerful than others.
 
 
 
 
 
 
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    New NASA STI

  • Isotope Fractionation in the Interstellar Medium

    14 May 2012 | 7:00 pm
    Abstract: Anomalously fractionated isotopic material is found in many primitive Solar System objects, such as meteorites and comets. It is thought, in some cases, to trace interstellar matter that was incorporated into the Solar Nebula without undergoing significant processing. We will present the results of models of the nitrogen, oxygen, and carbon fractionation chemistry in dense molecular clouds, particularly in cores where substantial freeze-out of molecules on to dust has occurred. The range of f...

  • Lessons in the Design and Characterization Testing of the Semi-Span Super-Sonic Transport (S4T) Wind-Tunnel Model

    14 May 2012 | 7:00 pm
    Abstract: This paper focuses on some of the more challenging design processes and characterization tests of the Semi-Span Super-Sonic Transport (S4T)-Active Controls Testbed (ACT). The model was successfully tested in four entries in the National Aeronautics and Space Administration Langley Transonic Dynamics Tunnel to satisfy the goals and objectives of the Fundamental Aeronautics Program Supersonic Project Aero-Propulso-Servo-Elastic effort. Due to the complexity of the S4T-ACT, only a small sample o...

  • Variability of Surface Temperature and Melt on the Greenland Ice Sheet, 2000-2011

    14 May 2012 | 7:00 pm
    Abstract: Enhanced melting along with surface-temperature increases measured using infrared satellite data, have been documented for the Greenland Ice Sheet. Recently we developed a climate-quality data record of ice-surface temperature (IST) of the Greenland Ice Sheet using the Moderate-Resolution Imaging Spectroradiometer (MODIS) 1ST product -- http://modis-snow-ice.gsfc.nasa.gov. Using daily and mean monthly MODIS 1ST maps from the data record we show maximum extent of melt for the ice sheet and its...

  • An Overview of the Semi-Span Super-Sonic Transport (S4T) Wind-Tunnel Model Program

    14 May 2012 | 7:00 pm
    Abstract: A summary of computational and experimental aeroelastic (AE) and aeroservoelastic (ASE) results for the Semi-Span Super-Sonic Transport (S4T) wind-tunnel model is presented. A broad range of analyses and multiple AE and ASE wind-tunnel tests of the S4T wind-tunnel model have been performed in support of the ASE element in the Supersonics Program, part of the NASA Fundamental Aeronautics Program. This paper is intended to be an overview of multiple papers that comprise a special S4T technical ...

  • RIMAS - Optical Design Development of the Imager/Spectrometer for the Discovery Channel Telescope

    14 May 2012 | 7:00 pm
    Abstract: The Rapid IMAger - Spectrometer (RIMAS) is a collaborative effort between the University of Maryland at College Park, NASA-GSFC and Lowell Observatory designed for use on the 4.3 meter Discovery Channel Telescope at Lowell. The primary science goal of the instrument is the study of gamma-ray burst (ORB) afterglow appearing in the near-infrared. Continuous operation will allow measurements beginning minutes after the prompt emission. We present the results of the RIMAS optical design developme...
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    New NASA STI Report Series

  • Composite Stress Rupture: A New Reliability Model Based on Strength Decay

    14 May 2012 | 7:00 pm
    Abstract: A model is proposed to estimate reliability for stress rupture of composite overwrap pressure vessels (COPVs) and similar composite structures. This new reliability model is generated by assuming a strength degradation (or decay) over time. The model suggests that most of the strength decay occurs late in life. The strength decay model will be shown to predict a response similar to that predicted by a traditional reliability model for stress rupture based on tests at a single stress level. In...

  • HEART Aerothermodynamic Analysis

    14 May 2012 | 7:00 pm
    Abstract: This paper presents an assessment of the aerothermodynamic environment around an 8.3 meter High Energy Atmospheric Reentry Test (HEART) vehicle. This study generated twelve nose shape configurations and compared their responses at the peak heating trajectory point against the baseline nose shape. The heat flux sensitivity to the angle of attack variations are also discussed. The possibility of a two-piece Thermal Protection System (TPS) design at the nose is also considered, as are the surfac...

  • Rotary-Wing Relevant Compressor Aero Research and Technology Development Activities at Glenn Research Center

    3 May 2012 | 7:00 pm
    Abstract: Technical challenges of compressors for future rotorcraft engines are driven by engine-level and component-level requirements. Cycle analyses are used to highlight the engine-level challenges for 3000, 7500, and 12000 SHP-class engines, which include retention of performance and stability margin at low corrected flows, and matching compressor type, axial-flow or centrifugal, to the low corrected flows and high temperatures in the aft stages. At the component level: power-to-weight and efficie...

  • Assessment of Microphone Phased Array for Measuring Launch Vehicle Lift-off Acoustics

    1 May 2012 | 7:00 pm
    Abstract: The specific purpose of the present work was to demonstrate the suitability of a microphone phased array for launch acoustics applications via participation in selected firings of the Ares I Scale Model Acoustics Test. The Ares I Scale Model Acoustics Test is a part of the discontinued Constellation Program Ares I Project, but the basic understanding gained from this test is expected to help development of the Space Launch System vehicles. Correct identification of sources not only improves t...

  • Development and Application of Benchmark Examples for Mixed-Mode I/II Quasi-Static Delamination Propagation Predictions

    1 May 2012 | 7:00 pm
    Abstract: The development of benchmark examples for quasi-static delamination propagation prediction is presented and demonstrated for a commercial code. The examples are based on finite element models of the Mixed-Mode Bending (MMB) specimen. The examples are independent of the analysis software used and allow the assessment of the automated delamination propagation prediction capability in commercial finite element codes based on the virtual crack closure technique (VCCT). First, quasi-static benchma...
 
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    NASA 360 Vodcasts

  • NASA 360: Flywheel Energy Storage

    National Aeronautics and Space Administration (NASA)
    26 Apr 2012 | 11:00 am
    Johnny interviews Ralph Jansen of NASA Glenn Research Center about mechanical batteries, or flywheels, as alternatives to chemical batteries.

  • NASA 360: HIAD

    National Aeronautics and Space Administration (NASA)
    1 Mar 2012 | 11:00 am
    Researchers at NASA are rethinking how entry, descent and landing systems should work and have come up with a new design called the Hypersonic Inflatable Aerodynamic Decelerator.

  • NASA 360: Advanced Vehicle Concept

    National Aeronautics and Space Administration (NASA)
    5 Dec 2011 | 11:00 am
    See how NASA is helping industry come up with next generation aircraft.

  • NASA 360: Wallops Flight Facility

    National Aeronautics and Space Administration (NASA)
    18 Oct 2011 | 11:00 am
    Get a behind the scenes look at WFF's rockets, UAVs, Scientific balloons and more.

  • NASA 360 Environmentally Responsible Aviation

    National Aeronautics and Space Administration (NASA)
    22 Aug 2011 | 11:00 am
    Find our how NASA is making new aircraft more efficient and less noisy.
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    NASA EDGE

  • NASA EDGE: MMS Propulsion

    National Aeronautics and Space Administration (NASA)
    20 Apr 2012 | 11:00 am
    NASA EDGE looks at the development of the propulsion system for the Magnetospheric MultiScale Mission

  • NASA EDGE: Charlie Bolden

    National Aeronautics and Space Administration (NASA)
    19 Mar 2012 | 11:00 am
    NASA EDGE Races to interview NASA Administrator Charlie Bolden.

  • NASA EDGE: 2011 Recap

    National Aeronautics and Space Administration (NASA)
    19 Dec 2011 | 11:00 am
    NASA EDGE combines recreation and research as they look back over 2011.

  • NASA EDGE: 2011 Green Flight Challenge

    National Aeronautics and Space Administration (NASA)
    18 Nov 2011 | 11:00 am
    NASA EDGE covers the Green Flight Challenge and witness an aviation first, true electric flight!

  • NE@MMS

    National Aeronautics and Space Administration (NASA)
    7 Nov 2011 | 11:00 am
    Finally, NASA has a mission dedicated specifically to explore Magnetospherence - Magnetospheric MultiScale Mission.
 
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    NASACast Video

  • This Week @ NASA, May 11, 2012

    National Aeronautics and Space Administration (NASA)
    11 May 2012 | 11:00 am

  • In Their Own Words: Brent Jett

    National Aeronautics and Space Administration (NASA)
    8 May 2012 | 11:00 am
    Commercial Crew Program Deputy Manager Brent Jett discusses the importance of continuing research aboard the International Space Station and what the future holds for human spaceflight.

  • Black-Hole Hunter

    National Aeronautics and Space Administration (NASA)
    7 May 2012 | 11:00 am
    NASA's NuSTAR will use its X-ray eyes to scout for hidden black holes in the universe.

  • This Week @ NASA, May 7, 2012

    National Aeronautics and Space Administration (NASA)
    7 May 2012 | 11:00 am

  • What's Up for May 2012?

    National Aeronautics and Space Administration (NASA)
    1 May 2012 | 11:00 am
    A unique annular solar eclipse occurs on May 20 for lucky observers in a path from Eureka, California, to Lubbock, Texas.
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    NASACast: Universe Video

  • Black-Hole Hunter

    National Aeronautics and Space Administration (NASA)
    7 May 2012 | 11:00 am
    NASA's NuSTAR will use its X-ray eyes to scout for hidden black holes in the universe.

  • NuSTAR in Space

    National Aeronautics and Space Administration (NASA)
    16 Mar 2012 | 11:00 am
    NASA's newest X-ray telescope will have a lengthy structure that unfolds in space, allowing it to see high-energy objects like feeding black holes.

  • The Future Starts Here

    National Aeronautics and Space Administration (NASA)
    19 Apr 2011 | 11:00 am
    Kennedy Space Center is propelled today by the same strengths that have made it the nation's most celebrated launch complex for nearly 50 years.

  • Blacker Than Black

    National Aeronautics and Space Administration (NASA)
    2 Dec 2010 | 11:00 am
    The NASA Goddard Space Flight Center has a team of scientists testing micro and nanotechnology to use on spacecraft. The goal is to reduce the reflection off the surface of the instruments so that the data does not get polluted by the scattered light. The carbon nanotubes that the team grows have proven to be 10 times better than the NASA Z306 paint, currently used on spacecraft instruments.

  • The How-To Guide to Satellites: The Design Review

    National Aeronautics and Space Administration (NASA)
    12 Nov 2010 | 11:00 am
    Building satellites isn't easy.
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    NASACast: Solar System Video

  • Saturn's Weirdest Ring

    National Aeronautics and Space Administration (NASA)
    23 Apr 2012 | 11:00 am
    Images from NASA's Cassini spacecraft have revealed half-mile-sized (kilometer-sized) objects punching through parts of Saturn's F ring

  • Robotic Arm Target Practice

    National Aeronautics and Space Administration (NASA)
    19 Apr 2012 | 11:00 am
    How engineers teach Curiosity to use a robotic arm on Mars.

  • How Do You Land on Mars?

    National Aeronautics and Space Administration (NASA)
    19 Apr 2012 | 11:00 am
    Landing a spacecraft on Mars is one of the trickiest things we do.

  • Mars’ Whirling Dust Devil

    National Aeronautics and Space Administration (NASA)
    5 Apr 2012 | 11:00 am
    Animation of a skinny "dust devil" on the dust-covered Amazonis Planitia region of northern Mars.

  • Storm Chaser on Mars

    National Aeronautics and Space Administration (NASA)
    20 Mar 2012 | 11:00 am
    Mars Reconnaissance Orbiter Catches a Twister in Action
 
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    NASACast: Space Shuttle and Space Station Video

  • In Their Own Words: Brent Jett

    National Aeronautics and Space Administration (NASA)
    8 May 2012 | 11:00 am
    Commercial Crew Program Deputy Manager Brent Jett discusses the importance of continuing research aboard the International Space Station and what the future holds for human spaceflight.

  • Launch Abort Systems Challenge NASA Engineers

    National Aeronautics and Space Administration (NASA)
    27 Apr 2012 | 11:00 am
    NASA is drafting launch abort system (LAS) requirements that private companies must meet to be considered for the agency's crewed missions to low Earth orbit.

  • Space Shuttle Era: Ferry Flights

    National Aeronautics and Space Administration (NASA)
    9 Apr 2012 | 11:00 am
    When a shuttle orbiter travels from one place to another on Earth, it needs a lift -- a "ferry flight" -- aboard the Shuttle Carrier Aircraft.

  • Space Shuttle Era: Power Down

    National Aeronautics and Space Administration (NASA)
    9 Mar 2012 | 11:00 am
    For two of NASA's storied space shuttle orbiters, the lights have gone out for the last time. Discovery and Atlantis were permanently powered down in December 2011, as teams at NASA's Kennedy Space Center in Florida prepare the vehicles for public display.

  • Crew Quarters: A Home Before Launch

    National Aeronautics and Space Administration (NASA)
    10 Feb 2012 | 11:00 am
    Take a rare look inside Astronaut Crew Quarters with former shuttle commander Bob Cabana as he shows the area where flight crews relaxed, ate and exercised in the days before launch. The crew quarters facility is at NASA's Kennedy Space Center in Florida and set up to give astronauts a place to relax while keeping up their training.
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    NASACast: What's Up? Video Podcasts

  • What's Up for May 2012?

    National Aeronautics and Space Administration (NASA)
    1 May 2012 | 11:00 am
    A unique annular solar eclipse occurs on May 20 for lucky observers in a path from Eureka, California, to Lubbock, Texas.

  • What's Up for April 2012?

    National Aeronautics and Space Administration (NASA)
    30 Mar 2012 | 11:00 am
    Ice is common in our solar system, from ice-covered moons and rings around distant Jupiter and Saturn to deposits at the poles of the Moon... and even Mercury!

  • What's Up for March 2012?

    National Aeronautics and Space Administration (NASA)
    1 Mar 2012 | 11:00 am
    Not a week goes by this month when there isn't an amazing planetary view.

  • What's Up for February 2012?

    National Aeronautics and Space Administration (NASA)
    31 Jan 2012 | 11:00 am
    Mars gets closer and two comets delight viewers.

  • What's Up for January 2012?

    National Aeronautics and Space Administration (NASA)
    29 Dec 2011 | 11:00 am
    Check out a pretty parade of planets this month. Venus at dusk, Jupiter overhead, Mars before midnight, Saturn near sunrise.
 
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    NASA Image of the Day

  • Opportunity's Traverse Map From Sol 2951

    15 May 2012 | 11:00 pm
    After spending 19 weeks working in one place while solar power was too low for driving during the Martian winter, NASA's Mars Exploration Rover Opportunity is on the move again. The winter worksite was on the north slope of an outcrop called Greeley Haven. The rover used its rear hazard-avoidance camera after nearly completing the May 8 drive, capturing this view looking back at the Greeley Haven. Since landing in the Meridiani region of Mars on Jan. 25, 2004, Universal Time and EST (Jan. 24, PST), Opportunity has driven 21.4 miles (34.4 kilometers). This image is of Opportunity's traverse…
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    NASA Image of the Day (Large)

  • Opportunity's Traverse Map From Sol 2951

    15 May 2012 | 11:00 pm
    After spending 19 weeks working in one place while solar power was too low for driving during the Martian winter, NASA's Mars Exploration Rover Opportunity is on the move again. The winter worksite was on the north slope of an outcrop called Greeley Haven. The rover used its rear hazard-avoidance camera after nearly completing the May 8 drive, capturing this view looking back at the Greeley Haven. Since landing in the Meridiani region of Mars on Jan. 25, 2004, Universal Time and EST (Jan. 24, PST), Opportunity has driven 21.4 miles (34.4 kilometers). This image is of Opportunity's traverse…
 
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