Empathy for Donald Pettit

There was an intriguing outpouring of concern worldwide when Sunita Williams and Barry Wilmore returned to Earth after 280-something days in space. People were particularly concerned about Williams's health and how she was doing, as if Wilmore hadn't been there with her living through the same mission.

Researchers are still studying the effects of prolonged spaceflight on human bodies and don't yet have enough data to say with confidence that some effects are more pronounced in women's bodies. More than a few astronauts have also flown longer missions. NASA also has exercise and medical check-up regimens in place for astronauts to follow during long-duration missions as well as once they return to the ground. Taken together, while the mission profile was unusual, the duo didn't present NASA with challenges it didn't already know how to address.

Williams likely received the attention she did because she is more popular and, in some parts of the world, for her Indian ancestry. Other than her being a veteran astronaut, a NASA scientist, and a good ambassador for human spaceflight, I don't think she's special in a way that could justify the world's, including India's, tunnel vision.

In fact, while there was considerable interest in the astronauts' well-being onboard the International Space Station (ISS) after their original mission profile had been stretched from eight days to nine months, the world has a much better case study to focus on now — yet few seem bothered.

On April 20 (IST), Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner and NASA astronaut Donald "Don" Pettit returned from the ISS onboard a Soyuz capsule on its MS-26 mission. Of them, Pettit turned 70 years old today. He is NASA's oldest active astronaut. His most recent ISS expedition lasted 220 days and so far he has accumulated 590 days in space.

When the Soyuz MS-26 capsule touched down in Kazakhstan, NASA tweeted: