“Discovery” Astronauts Begin Their Second Spacewalk

April 11th, 2010 - 7:44 pm ICT by GD  

By Ranjan Bhaduri
SpacewalkCape Caneveral, Apr 11, (THAINDIAN NEWS) NASA space shuttle Discovery has started its second spacewalk by astronauts Clay Anderson and Rick Mastracchio. The astronauts shall continue its mission of replacing the old Ammonia Tank which is used at the ISS (International Space Station) on the starboard of NASA space station. Reportedly, they shall be taking three spacewalks as scheduled with the final one to be taken on Tuesday. The shuttle spacecraft went ahead to successfully land on ISS after a minor glitch hampered its travel midway as it started off from the Kennedy Space Center on Monday. This happens to be the final stock piling session of NASA scheduled to be completed in three spacewalks.

However, for the space shuttle Discovery it happens to be its 33rd mission, For the Space Shuttle Program it is their 131st mission. The astronauts underwent the spacewalk for a time span of 61/2 hours as they dislodged the ammonia tank and replaced the same in their next spacewalk. As a matter of fact, the ammonia tank is an old one which has been into existence for more than eight years now. The old ammonia tank shall be replaced by the new one that the space shuttle had brought along with it.

The ammonia tank weighed around 771-kg (1,700-pound) which contains toxic coolant which is essentially important for the perfect maintenance of the thermal power system of the space station. The dislodged old ammonia tank shall ride empty to earth in Discovery and shall be refilled and would eventually be set back in its own place.

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