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NASA works to secure the OSIRIS-REx asteroid sample

Richard Lawler
·Senior News Editor
·2-min read

Earlier this week the OSIRIS-REx spacecraft reached out and took a small bite from the asteroid Bennu. Now the team behind the spacecraft reports they may have been a little too successful. Their goal was to grab at least 60 grams of its surface material, and that appears to have been accomplished — and then some.

The downside right now is that after looking at the images, some particles appear to be escaping the collection device, called the Touch-And-Go Sample Acquisition Mechanism (TAGSAM). It’s possible that larger rocks have kept a mylar flap wedged open, letting smaller pieces fly out.

NASA associate administrator Thomas Zurbuchen said in a statement that “although we may have to move more quickly to stow the sample, it’s not a bad problem to have. We are so excited to see what appears to be an abundant sample that will inspire science for decades beyond this historic moment.” Dante Lauretta leads the science team and said “The loss of mass is of concern to me, so I’m strongly encouraging the team to stow this precious sample as quickly as possible.”

Based on the data, they believe the head has “much more than 2 ounces of regolith,” and they’ve adjusted their plans in order to stow it away as quickly as possible. A planned measurement that would’ve spun the sampling arm to help determine the mass of the sample has been canceled, as well as a braking burn for the craft.