Expedition 56 Flight Engineer Serena Auñón-Chancellor of NASA in the Destiny laboratory module June 11 with gear for measuring and analyzing red blood cell function to help doctors understand how blood cell production is altered in microgravity. Credit: NASA Johnson via Flickr

This article originally appeared in the June 25, 2018 issue of SpaceNews magazine.

To continue reading this article:

Register now to read
3 free articles this month.

You’ll also receive our weekly Editor’s Choice, SpaceNews This Week and Opinions newsletters. Opt-out at any time.

Sign in to an existing account

Get unlimited access to SpaceNews.com, the SpaceNews app and our digital monthly magazine for less than $5 per week.

$280

On a campus or library network? Check for access.

Cancel anytime. Sales tax may apply. No refunds. Terms and conditions apply.

See all subscription options

Debra Werner is a correspondent for SpaceNews based in San Francisco. Debra earned a bachelor’s degree in communications from the University of California, Berkeley, and a master’s degree in Journalism from Northwestern University. She is a recipient...