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American Record-Breaking NASA Astronaut Peggy Whitson Set to Return Back to Earth After 288-Days Space Mission

At the time of their landing, Whitson will have gathered a total of 665 days in space over the course of her career which is more than any American astronaut.

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Peggy Whitson
American record-holder NASA astronaut Peggy Whitson. Wikimedia
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  • Nasa astronaut Peggy Whitson set to return back to Earth from International Space Station
  • The astronauts return after completing 288 days in space in Expedition 52
  • Peggy Whitson holds the record for the maximum time spend in space by an American astronaut

Washington, September 2, 2017 : NASA astronaut Peggy Whitson, who holds the record for maximum time spent in space by any American astronaut, is set to return to Earth on Saturday, completing a 288-day mission at the International Space Station.

Whitson and her Expedition 52 crewmates Jack Fischer of NASA and Fyodor Yurchikhin of the Russian space agency Roscosmos are scheduled to land in Kazakhstan at 9.22 p.m. EDT on Saturday (6.52 a.m. Sunday, India time).

At the time of their landing, she will have accrued a total of 665 days in space over the course of her career, more than any American astronaut, placing her eighth on the all-time space endurance list, NASA said.

Whitson’s return will mark the end of her third long-duration stay onboard the space station.

She launched on November 17 with 377 days in space already under her belt, and on April 24 broke Jeff Williams’ standing US record of 534 cumulative days in space.

Whitson also holds the record for most spacewalks by a female.

Yurchikhin and Fischer, who launched in April, will complete 136 days in space on their return. Yurchikhin will return to Earth with a total of 673 days in space on his five flights, putting him in seventh place on the all-time endurance list.

At the time of undocking, Expedition 53 will begin aboard the station under the command of Randy Bresnik.

Along with his crewmates Sergey Ryazanskiy of Roscosmos and Paolo Nespoli of ESA (European Space Agency), the three-person crew will operate the station until the arrival of three new crew members.

Mark Vande Hei and Joe Acaba of NASA and Alexander Misurkin of Roscosmos, are scheduled to launch on September 12 from Baikonur, Kazakhstan, NASA said. (IANS)

 

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Chandra Observatory By NASA Back in Action

Scientists are currently performing analyses and tests to determine what options were available to recover the gyro to operational performance

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NASA's Chandra Observatory back in action. Pixabay

NASA Chandra X-Ray Observatory, observing the universe in high-energy light since 1999, is back in action after suffering a glitch due to the failure of the gyroscope and going into safe mode last week.

The cause of Chandra’s safe mode on October 10 has now been understood and the Operations team has successfully returned the spacecraft to its normal pointing mode, according to the US space agency.

“The safe mode was caused by a glitch in one of Chandra’s gyroscopes resulting in a 3-second period of bad data that, in turn, led the on-board computer to calculate an incorrect value for the spacecraft momentum. The erroneous momentum indication then triggered the safe mode,” NASA said in a statement late on Monday.

The team has completed plans to switch gyroscopes and place the gyroscope that experienced the glitch in reserve.

Once configured with a series of pre-tested flight software patches, the team will return Chandra to science operations which are expected to commence by the end of this week, NASA said.

On October 10, Chandra X-ray Observatory entered safe mode, in which the observatory is put into a safe configuration, critical hardware is swapped to back-up units, the spacecraft points so that the solar panels get maximum sunlight, and the mirrors point away from the Sun.

Chandra is 19 years old, which is well beyond the original design lifetime of five years. In 2001, NASA extended its lifetime to 10 years.

NASA
NASA’s Dawn spacecraft, which has been orbiting the dwarf planet Ceres since March 2015, is also nearly out of fuel and might run out as early as October. Flickr

The US space agency said that it was also continuing to work towards resuming science operations of the Hubble Space Telescope that on October 5, entered safe mode after one of the three gyroscopes (gyros) being used to point and steady the telescope failed.

Gyroscopes help spacecraft maintain proper orientation.

Scientists are currently performing analyses and tests to determine what options were available to recover the gyro to operational performance.

Till that time, science operations with Hubble have been suspended.

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Besides Chandra and Hubble, NASA’s planet-hunting Kepler space telescope is also almost out of fuel. Kepler has found about 70 per cent of all known alien worlds to date.

NASA’s Dawn spacecraft, which has been orbiting the dwarf planet Ceres since March 2015, is also nearly out of fuel and might run out as early as October.

The space agency’s Mars rovers Opportunity and Curiosity too have faced issues of late. (IANS)