The last external tank (designated ET-138) scheduled to fly on a shuttle mission was completed on June 25 at NASA’s Michoud Assembly Facility near New Orleans. ET-138 will travel on a 900-mile sea journey to NASA’s Kennedy Space Center in Florida, where it will support shuttle Endeavour’s STS-134 launch.
Taller than a 15-story building and more than 27 feet in diameter, the external tank feeds 145,000 gallons of liquid oxygen and 390,000 gallons of liquid hydrogen to the main engines. The three main components of the external tank include a liquid oxygen tank, liquid hydrogen tank and a collar-like intertank. The intertank connects the two propellant tanks, houses instrumentation and processing equipment, and provides the attachment structure for the solid rocket boosters.
When ET-138 arrives at KSC, it will be mated to shuttle Endeavour and solid rocket boosters for the STS-134 mission, scheduled to launch no earlier than mid-November 2010.
To read more about the mission, visit the NASA website at https://www.nasa.gov/topics/shuttle_station/features/et138_rollout.html.
NASA has released an interactive online tool enabling students to simultaneously visualize and manipulate three linked representations of a distance-rate-time problem. The side-by-side tool format features two airplanes (each flying at a constant speed) on merging jet routes, the corresponding distance-vs.-time graphs, and the corresponding linear equations.
Students can manipulate an airplane’s speed and starting position on its route, rotate or shift the associated line on the graph, and change the parameters of the associated equation. As students change one representation, the other representations update accordingly.
The free classroom materials include the tool, student workbooks, assessments, teacher guides, and alignments to grades 5-9 mathematics standards for all 50 states.
The new tool is an addition to FlyBy Math from NASA Smart Skies — distance-rate-time investigations engaging students in the challenges faced by air traffic controllers.
To access the new tool, visit http://www.smartskies.nasa.gov/flyby.
To access all of the Smart Skies mathematics investigations, visit http://www.smartskies.nasa.gov/.
Questions about the Smart Skies website and tools should be directed to firstname.lastname@example.org.
Rocks examined by NASA’s Mars rover Spirit hold evidence of an ancient wet, non-acidic environment that may have been favorable for life. Confirming this mineral clue took four years of analysis by several scientists.
Spirit inspected many rock outcrops, including one called Comanche by scientists. They discovered magnesium iron carbonate makes up about one-fourth of the measured volume in Comanche samples. That is a tenfold higher concentration than any previously identified for carbonate in a Martian rock.
Massive carbonate deposits on Mars have been sought for years without much success. Numerous channels apparently carved by flows of liquid water on ancient Mars suggest the planet was formerly warmer, thanks to greenhouse warming from a thicker atmosphere than exists now. The dense, ancient Martian atmosphere was probably rich in carbon dioxide, because that gas makes up nearly all the very thin, modern atmosphere.
Finding a tick usually involves a squeamish self-examination — carefully rubbing fingertips through your scalp, meticulously scanning your body, and groaning “eyeww” if a little bloodsucker is discovered. But now there is a new way to discover these pesky, disease-laden critters — via satellite!
Two University of Alabama at Birmingham graduate students are pioneering the new technique as part of a NASA program called DEVELOP. They’ve been using satellite images of Alabama’s Talladega National Forest to reveal likely areas of the forest where ticks may flourish. The students used what they learned from their NASA advisor, Dr. Jeff Luvall of NASA’s Marshall Space Flight Center in Huntsville, to classify levels of vegetation and moisture in 12 locations in the forest. They then created detailed digital maps and images showing likely tick habitats — areas where dense vegetation overlapped those with high soil moisture.
Really Simple Syndication, or RSS, is an easy way to keep up with posts to the NES Teachers Corner. Headlines, summaries and links to each post’s full text are automatically delivered to you in near real-time each time a new post is added.
As an NES participant, you’ll want to keep up to date with what’s going on with the project. Information about NES live and recorded events, special opportunities and NASA mission updates will be posted on the Teachers Corner.
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From the NES Virtual Campus home page, click on the Teachers Corner link. Then click on the small orange icon (see image with this post) in the upper right corner of the page. A browser window will open, showing all of the current posts. Add this page as a bookmark or favorite to your browser’s bookmark or favorites bar. That’s all there is to it!
Link to the NES Virtual Campus home page
Welcome to the NASA Explorer Schools Teachers Corner! This forum supports the NES project by disseminating NES project information as well as providing NASA mission updates that may be of interest to students and teachers. It is also a place for educators to share comments and ideas on how NASA’s educational materials and mission of research and discovery connect with what is taught in classroom.
Use the comment feature below each entry to share your thoughts or ideas with the NES team and your fellow educators. The comments are moderated so they won’t appear instantly. Please do not include URLs, e-mail addresses or links to websites in your comments, we cannot post comments that include these items.
Stay tuned! Throughout the summer the Teachers Corner will be updated with NES project information and educational opportunities and provide information about current NASA missions and projects.