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50 Astronauts to conduct 3 Spacewalks outside International Space Station (ISS) for future arrival of commercial crew Spacecraft

The spacewalkers also will install on the starboard zero truss a new computer relay box equipped with advanced software for the adapter

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Washington, March 24, 2017: Starting Friday, Expedition 50 astronauts will conduct up to three spacewalks outside the International Space Station (ISS) to prepare for the future arrival of commercial crew spacecraft and upgrade station hardware, NASA said.

The second and third spacewalks are scheduled for March 30 and April 6.

The spacewalks will be the 198th, 199th and 200th in support of space station assembly and maintenance.

The first spacewalk will prepare the Pressurised Mating Adapter-3 (PMA-3) for installation of the second International Docking Adapter, which will accommodate commercial crew vehicle dockings, NASA said.

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The PMA-3 provides the pressurised interface between the station modules and the docking adapter.

Expedition 50 Commander Shane Kimbrough of NASA and Flight Engineer Thomas Pesquet of ESA (European Space Agency) will disconnect cables and electrical connections on PMA-3 to prepare for its robotic move on March 26.

PMA-3 will be moved from the port side of the Tranquility module to the space-facing side of the Harmony module, where it will become home for the docking adapter, which will be delivered on a future flight of a SpaceX Dragon cargo spacecraft.

The spacewalkers also will install on the starboard zero truss a new computer relay box equipped with advanced software for the adapter.

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The second spacewalk will feature Kimbrough and Flight Engineer Peggy Whitson of NASA reconnecting cables and electrical connections on PMA-3 at its new home on top Harmony.

The final spacewalk will tentatively feature Whitson and Pesquet replacing an avionics box on the starboard truss called an ExPRESS Logistics Carrier, a storage platform, NASA said.

While Kimbrough’s two spacewalks will be the fifth and sixth of his career, Whitson will be making the eighth and ninth spacewalks of her career – more than any other female astronaut.

Pesquet will undertake the second and third spacewalks in his career. (IANS)

 

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Astronomers Capture 15,000 Galaxies Using Hubble Telescope

Hubble can provide some of the most sensitive space-based ultraviolet observations possible.

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Hubble Telescope. Flickr

On one of the largest panoramic views of star birth, astronomers using the ultraviolet vision of NASAs Hubble telescope have assembled an image that features approximately 15,000 galaxies, about 12,000 of which are forming stars.

This image is a portion of the GOODS-North field, which is located in the northern constellation Ursa Major, NASA said in a statement Thursday.

The image straddles the gap between the very distant galaxies, which can only be viewed in infrared light, and closer galaxies, which can be seen across a broad spectrum.

Galaxy, hubble telescope
Representational Image of Galaxy. Wikimedia Commons.

The light from distant star-forming regions in remote galaxies started out as ultraviolet, but the expansion of the universe shifted the light into infrared wavelengths.

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By comparing images of star formation in the distant and nearby universe, astronomers glean a better understanding of how nearby galaxies grew from small clumps of hot, young stars long ago, NASA said.

Because Earth’s atmosphere filters most ultraviolet light, Hubble can provide some of the most sensitive space-based ultraviolet observations possible. (IANS)