China national space administration, Space agency

Washington, Oct 27 NASA on Tuesday said its OSIRIS-REx spacecraft is ready to perform an early stow on October 27 of the large sample it collected last week from the surface of the asteroid Bennu to protect and return as much of the sample as possible.On October 22, the OSIRIS-REx mission team received images that showed the spacecraft's collector head overflowing with material collected from Bennu's surface well over the 60-gram mission requirement.The images showed that some of these particles appeared to be slowly escaping from the collection head, called the Touch-And-Go Sample Acquisition Mechanism (TAGSAM).A mylar flap on the TAGSAM allows material to easily enter the collector head, and should seal shut once the particles pass through.However, larger rocks that did not fully pass through the flap into the collection head appear to have wedged this flap open, allowing bits of the sample to leak out.Now NASA's Science Mission Directorate has given the mission team the go-ahead to expedite sample stowage, originally scheduled for November 2, in the spacecraft's Sample Return Capsule (SRC) to minimise further sample loss."The abundance of material we collected from Bennu made it possible to expedite our decision to stow," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson."The team is now working around the clock to accelerate the stowage timeline, so that we can protect as much of this material as possible for return to Earth."The mission anticipates the entire stowage process will take multiple days, at the end of which the sample will be safely sealed in the spacecraft's Sample Return Capsule for the spacecraft's journey back to Earth.The sample is scheduled to be returned to Earth in 2023.( With inputs from IANS )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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