Orbital observation

On Monday (Sept. 22), NASA named its next class of astronaut candidates during a ceremony held at Johnson Space Center in Houston. In addition to recording a message to the new trainees, members of the Expedition 73 crew also shared a photo (below) of them watching Group 24 being introduced.

"To the newest astronaut class, from the crew of Expedition 73 onboard the International Space Station, congratulations and welcome to the Astronaut Corps!" wrote Jonny Kim, a fellow NASA astronaut.

The "ascans" will become eligible for flight assignments after about two years of basic training.

Science status

Among the research that was conducted by the Expedition 73 crew aboard the space station this week was:

Voyager DNA Decryption — NASA's Jonny Kim sequenced DNA samples a

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