Expedition crewmember Joe Acaba signs a wall mural as part of traditional pre-launch activities.

In the Korolev Museum at the Baikonur Cosmodrome in Kazakhstan, Expedition 53-54 crewmember Joe Acaba of NASA signs a wall mural Sept. 7 as part of traditional pre-launch activities. Acaba, Mark Vande Hei of NASA and Alexander Misurkin of Roscosmos will launch Sept. 13 on the Soyuz MS-06 spacecraft for a five and a half month mission on the International Space Station. Credit: NASA/Victor Zelentsov