Correction to: npj Microgravity (2017); doi:10.1038/s41526-017-0033-9; Published 16 November 2017

The following text was added to the Author Contributions section: A.S.B., H.C.C., and A.R.B. contributed equally to the work and are considered co-first authors. This has now been corrected in the HTML and PDF versions of this Article.