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Inside NASA's giant thermal vacuum chamber, called Chamber A, at NASA's Johnson Space Center in Houston, the James Webb Space Telescope's Pathfinder backplane test model, is being prepared for its cryogenic test. Previously used for manned spaceflight missions, this historic chamber is now filled with engineers and technicians preparing for a crucial test.  Exelis developed and installed the optical test equipment in the chamber.  &quot;The optical test equipment was developed and installed in the chamber by Exelis,&quot; said Thomas Scorse, Exelis JWST Program Manager. &quot;The Pathfinder telescope gives us our first opportunity for an end-to-end checkout of our equipment.&quot;  &quot;This will be the first time on the program that we will be aligning two primary mirror segments together,&quot; said Lee Feinberg, NASA Optical Telescope Element Manager. &quot;In the past, we have always tested one mirror at a time but this time we will use a single test system and align both mirrors to it as though they are a single monolithic mirror.&quot;  The James Webb Space Telescope is the scientific successor to NASA's Hubble Space Telescope. It will be the most powerful space telescope ever built. Webb is an international project led by NASA with its partners, the European Space Agency and the Canadian Space Agency.  Image credit: NASA/Chris Gunn Text credit: Laura Betz, NASA's Goddard Space Flight Center, Greenbelt, Maryland  <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b>  <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.  <b>Follow us on <a href="http://twitter.com/NASAGoddardPix" rel="nofollow">Twitter</a></b>  <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b>  <b>Find us on <a href="http://instagrid.me/nasagoddard/?vm=grid" rel="nofollow">Instagram</a></b>
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NASA image release November 9, 2010  To view a video about this story go to: <a href="http://www.flickr.com/photos/gsfc/5162413062">www.flickr.com/photos/gsfc/5162413062</a>  Using data from NASA's Fermi Gamma-ray Space Telescope, scientists have recently discovered a gigantic, mysterious structure in our galaxy. This never-before-seen feature looks like a pair of bubbles extending above and below our galaxy's center.  But these enormous gamma-ray emitting lobes aren't immediately visible in the Fermi all-sky map. However, by processing the data, a group of scientists was able to bring these unexpected structures into sharp relief.  Each lobe is 25,000 light-years tall and the whole structure may be only a few million years old. Within the bubbles, extremely energetic electrons are interacting with lower-energy light to create gamma rays, but right now, no one knows the source of these electrons.  Are the bubbles remnants of a massive burst of star formation? Leftovers from an eruption by the supermassive black hole at our galaxy's center? Or or did these forces work in tandem to produce them? Scientists aren't sure yet, but the more they learn about this amazing structure, the better we'll understand the Milky Way.  To learn more go to: <a href="http://www.nasa.gov/mission_pages/GLAST/news/new-structure.html" rel="nofollow">www.nasa.gov/mission_pages/GLAST/news/new-structure.html</a>  <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.  <b>Follow us on <a href="http://twitter.com/NASA_GoddardPix" rel="nofollow">Twitter</a></b>  <b>Join us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b>  Credit: <a href="http://svs.gsfc.nasa.gov/index.html" rel="nofollow">NASA/Goddard Space Flight Center Scientific Visualization Studio</a>
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This frame from an artist animation shows the view from a hypothetical moon in orbit around the first known planet to reside in a tight-knit triple-star system. HD 188553 Ab is a gas giant planet, about 1.14 times the mass of Jupiter.
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SL3-122-2612 (6 Aug. 1973) --- Astronaut Alan L. Bean, Skylab 3 commander, participates in the final Skylab 3 extravehicular activity (EVA), during which a variety of tasks were performed. Here, Bean is near the Apollo Telescope Mount (ATM) during final film change out for the giant telescope facility. Astronaut Owen K. Garriott, who took the picture, is reflected in Bean's helmet visor. The reflected Earth disk in Bean's visor is so clear that the Red Sea and Nile River area can delineated. Photo credit: NASA
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This image of Oppia AV-L-22, from the atlas of the giant asteroid Vesta, was created from images taken as NASA Dawn mission flew around the object, also known as a protoplanet. The set of maps was created from mosaics of10,000 images from Dawn's framing camera instrument, taken at a low altitude of about 130 miles (210 kilometers). This map is mostly at a scale about that of regional road touring maps, where every inch of map is equivalent to a little more than 3 miles of asteroid (one centimeter equals 2 kilometers).  http://photojournal.jpl.nasa.gov/catalog/PIA19526
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Man using laptop while having coffee in coffee shop
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Smiling man holding a cup of coffee and reading newspaper in coffee shop
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Thoughtful senior man having coffee in kitchen at home
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Businessman holding a disposable coffee cup and using mobile phone in the bus
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Senior man pouring coffee into cup in kitchen at home
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Rear view of man using laptop in skateboard arena
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Portrait of waitress using cash register at counter in café
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Couple using digital tablet and mobile phone at home
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Portrait of two smiling men sitting at table in coffee shop
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Man using mobile phone in the coffee shop
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Male executive taking selfie from mobile phone in cafeteria
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Portrait of waitress holding tray of muffins at counter in cafe
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