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Aerospace


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<b>Space Telescope Imaging Spectrograph </b>(STIS), the most versatile spectrograph ever to fly on Hubble, ceased operations in August 2004 due to the failure of its power supply. In order to restore STIS to operational status, astronauts will perform a never-before-attempted on-orbit replacement of an electronics board inside STIS's main electronics box. On Earth this operation is relatively simple, but in space many challenges confront the astronauts as they work to replace the failed board including working to remove 111 tiny, non-captive screws with astronaut gloves. <p> <b>The Cosmic Origins Spectrograph </b> (COS) that will be added during Servicing Mission 4, and STIS are highly complementary and are very complimentary to each other providing scientists with a full set of spectroscopic tools for astrophysical research. The STIS instrument's accomplishments include determining the atmospheric composition of an exoplanet as well as spectra and images at ultraviolet and visible wavelengths of the Universe from our solar system out to cosmological distances. </p><p><p><p><p><p>For complete transcript, click <a href='/vis/a010000/a010300/a010350/script_725_01.html'>here</a>. 10350 STIS Repair: The Quest for Renewed Exploration
A web feature about NASA's plan to repair the Advanced Camera for Surveys during Hubble Servicing Mission 4.<p><p><p>For complete transcript, click <a href='/vis/a010000/a010300/a010348/script_739_00.html'>here</a>. 10348 ACS Repair: The Challenge to Fix Hubble's Best Survey Camera
Hubble Space Telescope Servicing Mission 4 is the last time humans will visit Hubble. NASA's scientists, engineers and astronauts are working together to make Hubble better than it has been before. See what NASA has planned for this last mission to Hubble; from new science instruments, to two challenging and never-done-before instrument repairs, and numerous upgrades.<p><p><p>For complete transcript, click <a href='/vis/a010000/a010300/a010346/script_719_01.html'>here</a>. 10346 The Last Mission to Hubble
When placed on the Hubble Space Telescope, WFC3 will provide unprecedented capabilities for imaging the cosmos at near-ultraviolet and at near-infrared wavelengths. The Wide Field Camera 3 (WFC3) will study a diverse range of objects and phenomena, from early and distant galaxy formation to nearby planetary nebulae, and finally our own backyard -- the planets and other bodies of our Solar System. WFC3 extends Hubble's capability not only by seeing deeper into the universe but also by seeing simultaneously into the infrared and ultraviolet. WFC3 can, for example, simultaneously observe young, hot stars (glowing predominantly in the ultraviolet) and older, cooler stars (glowing predominantly in the infrared) in the same galaxy. 10266 Wide Field Camera 3: Extending Hubble's Vision, Packed with Power
In planning for Servicing Mission 4 to Hubble, crew members divide their time between NASA's Johnson Space Center, Houston, working underwater on a Hubble mock-up to simulate the effects of weightlessness, and NASA's Goddard Space Flight Center, Greenbelt, Maryland, where they practice scheduled mission tasks on a Hubble mock-up inside a large clean room facility. Many Goddard engineers are trained divers. These engineers work along side the astronauts while in the Neutral Buoyancy Lab to aid in their training. This underwater experience helps HST engineers understand what the astronauts need as they work together to refine tools and procedures to service Hubble.<p><p><p>For complete transcript, click <a href='/vis/a010000/a010200/a010242/script_410_00.html'>here</a>. 10242 Goddard Space Flight Center Divers
The Hubble would not be able to do what it does without the help of a small group of dedicated engineers and technicians at NASA's Goddard Space Flight Center. During HST Servicing Missions the Space Telescope Operations Control Room at NASA Goddard Space Flight Center becomes a very busy place.<p><p><p>For complete transcript, click <a href='/vis/a010000/a010200/a010241/script_400_00.html'>here</a>. 10241 HST Operations at GSFC - STOCC2
A team at NASA's Goddard Space Flight Center designs and builds the special tools and aids astronauts need when they service the Hubble Space Telescope. Engineers describe working with the astronaut crew and developing tools to meet specific challenges as well as inventing new tools that will help NASA astronauts well into the future. <p>For complete transcript, click <a href='/vis/a010000/a010200/a010240/script_412_02.html'>here</a>. 10240 CATS: Crew Aids and Tools
To prepare for Servicing Mission 4, Hubble components must endure harsh tests at NASA's Goddard Space Flight Center. This feature explores test facilities at Goddard like: launch phase simulator centrifuge, the acoustic test chamber, electromagnetic interference testing, vibration tables, static load test facility, and the space environment simulator.<p><p><p>For complete transcript, click <a href='/vis/a010000/a010200/a010239/script_399_00.html'>here</a>. 10239 Enter NASA's Spacecraft Chamber of Horrors
An update on instrument, tool and carrier preparations for STS-125: HST Servicing Mission 4 at NASA Goddard Space Flight Center in Maryland. Update as of January 2, 2008. <p>For complete transcript, click <a href='/vis/a010000/a010200/a010238/script_398_02.html'>here</a>. 10238 HST SM4 Countdown Status 1