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Mounted atop Atlas 5
After reaching Lockheed Martin's Vertical Integration Facility following the early morning drive across the Cape, a crane lifts the New Horizons spacecraft into the 30-story building for mounting atop the awaiting Atlas 5 vehicle.

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Leaving the hangar
The New Horizons spacecraft, mounted atop a special transporter, departs Kennedy Space Center's Payload Hazardous Servicing Facility after spending three months in the building undergoing testing, final closeouts, filling of its hydrazine fuel, mating with the third stage kick motor and spin-balance checks. The probe was driven to the Atlas 5 rocket's assembly building at Complex 41 for mating with the launcher.

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Mission logo
With New Horizons enclosed within the Lockheed Martin Atlas 5 rocket's nose cone, a large decal reading: "New Horizons: Pluto-Kuiper Belt Mission" is applied to the payload fairing.

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Nose cone encapsulation
The New Horizons is packed away for its launch to Pluto as workers slide the two-piece Atlas 5 rocket nose cone around the spacecraft at the Kennedy Space Center Payload Hazardous Servicing Facility. The Swiss-made shroud protects the spacecraft during ascent through Earth's atmosphere.

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b>STS-32: LDEF retrieval
Space shuttle Columbia's mission in January 1990 sought to retrieve the Long Duration Exposure Facility -- a bus-size platform loaded with 57 experiments -- that had been put into orbit six years earlier. LDEF was supposed to be picked up within a year of its launch. But plans changed and then the Challenger accident occurred. Columbia's STS-32 crew got into space, deployed a Navy communications satellite, then fulfilled their LDEF recovery mission, carried out a host of medical tests and returned to Earth with a nighttime touchdown in the California desert. The crew presents this post-flight film of mission highlights.

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NASA through the decades
This film looks at the highlights in NASA's history from its creation in the 1950s, through the glory days of the Mercury, Gemini and Apollo programs, birth of the space shuttle and the loss of Challenger, launch of Hubble and much more.

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STS-49: Satellite rescue
If at first you don't succeed, keep on trying. That is what the astronauts of space shuttle Endeavour's maiden voyage did in their difficult job of rescuing a wayward communications satellite. Spacewalkers were unable to retrieve the Intelsat 603 spacecraft, which had been stranded in a useless orbit, during multiple attempts using a special capture bar. So the crew changed course and staged the first-ever three-man spacewalk to grab the satellite by hand. The STS-49 astronauts describe the mission and narrate highlights in this post-flight presentation.

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Cartwheel Galaxy makes waves in new NASA image
NASA/JPL NEWS RELEASE
Posted: January 14, 2006


This false-color composite image shows the Cartwheel galaxy. Although astronomers have not identified exactly which galaxy collided with the Cartwheel, two of three candidate galaxies can be seen in this image to the bottom left of the ring, one as a neon blob and the other as a green spiral. Image credit: NASA/JPL-Caltech
Download larger image version here

 
A new image from NASA's Galaxy Evolution Explorer completes a multi-wavelength, neon-colored portrait of the enormous Cartwheel galaxy after a smaller galaxy plunged through it, triggering ripples of sudden, brief star formation.

The false-color composite image shows the Cartwheel galaxy as seen by Galaxy Evolution Explorer in ultraviolet light (blue); the Hubble Space Telescope in visible light (green); the Spitzer Space Telescope in infrared (red); and the Chandra X-ray Observatory (purple).

"The dramatic plunge has left the Cartwheel galaxy with a crisp, bright ring around a zone of relative calm," said astronomer Phil Appleton of the California Institute of Technology, Pasadena, Calif. "Usually a galaxy is brighter toward the center, but the ultraviolet view indicates the collision actually smoothed out the interior of the galaxy, concentrating older stars and dust into the inner regions. It's like the calm after the storm of star formation." The outer ring, which is bigger than the entire Milky Way galaxy, appears blue and violet in the image.

Recently-observed features include concentric rings rippling out from the impact area in a series of star formation waves, ending in the outermost ring. "It's like dropping a stone into a pond, only in this case, the pond is the galaxy, and the wave is the compression of gas," said Appleton. "Each wave represents a burst of star formation, with the youngest stars found in the outer ring."

Previously, scientists believed the ring marked the outermost edge of the galaxy, but the latest Galaxy Evolution Explorer observations detect a faint disk, not visible in this image, that extends to twice the diameter of the ring. This means the Cartwheel is a monstrous 2.5 times the size of the Milky Way.

Most galaxies have only one or two bright X-ray sources, usually associated with gas falling onto a black hole from a companion star. The Cartwheel has a dozen. Appleton said that makes sense, because black holes thrive in areas where massive stars are forming and dying fast.

The Cartwheel galaxy is one of the brightest ultraviolet energy sources in the local universe. In some visible-light images, it appears to have spokes. Appleton is presenting his finding today at the 207th meeting of the American Astronomical Society in Washington. His research collaborators included Armando Gil de Paz of Universidad Complutense, Madrid, Spain; and Barry Madore of The Observatories of the Carnegie Institution of Washington, Pasadena, Calif. The team's observations were a follow-up to studies made by the Galaxy Evolution Explorer science team's Nearby Galaxy Survey.

Caltech leads the Galaxy Evolution Explorer mission and is responsible for science operations and data analysis. NASA's Jet Propulsion Laboratory, Pasadena, Calif., manages the mission and built the science instrument. The mission was developed under NASA's Explorers Program managed by the Goddard Space Flight Center, Greenbelt, Md. South Korea and France are international partners in the mission.