The aquanaut crew of the NASA/NOAA NEEMO 16 underwater exploration mission just before "splashdown" on Mission Day 1, June 11, 2012.  Left to right:  JAXA astronaut <a href="https://en.wikipedia.org/wiki/Kimiya_Yui" class="extiw" title="en:Kimiya Yui">Kimiya Yui</a>, NASA astronaut/NEEMO 16 commander <a href="https://en.wikipedia.org/wiki/Dorothy_Metcalf-Lindenburger" class="extiw" title="en:Dorothy Metcalf-Lindenburger">Dorothy Metcalf-Lindenburger</a>, European Space Agency astronaut <a href="https://en.wikipedia.org/wiki/Timothy_Peake" class="extiw" title="en:Timothy Peake">Tim Peake</a>, and Cornell University astrophysicist <a href="https://en.wikipedia.org/wiki/Steve_Squyres" class="extiw" title="en:Steve Squyres">Steve Squyres</a>.  NASA photo in public domain.
NASA
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