page_title: Expedition 23
section_title: Mission overview
hierarchical_section_title: Expedition 23 / Mission overview
caption_attribution_description: English: The four women currently on the International Space Station pose for a photo in the Zvezda Service Module while space shuttle Discovery remains docked with the station. Pictured clockwise from the lower left are NASA astronauts Tracy Caldwell Dyson, Expedition 23 flight engineer; NASA astronaut Dorothy Metcalf-Lindenburger, Japan Aerospace Exploration Agency (JAXA) astronaut Naoko Yamazaki and NASA astronaut Stephanie Wilson, all STS-131 mission specialists.
context_page_description: Expedition 23 was the 23rd long-duration mission to the International Space Station. Expedition 23 began with the Soyuz TMA-16 undocking on 18 March 2010. Shortly thereafter cosmonauts Aleksandr Skvortsov and Mikhail Korniyenko and astronaut Tracy Caldwell Dyson arrived at the Space Station on Soyuz TMA-18 on 4 April 2010. The Soyuz spacecraft lifted off from the Baikonur Cosmodrome at 00:04 EST on 2 April 2010.
context_section_description: Three Russian cosmonauts, two American and one Japanese astronauts made up the Expedition 23 crew. It was the first ISS crew to include three Russians at once. The Expedition 23 crew continued outfitting the newest modules of the nearly completed space station. The crew welcomed the shuttle flight STS-131 in April 2010. The Expedition 23 crew also saw the arrival of the Rasvet Russian docking module (MRM1) aboard Space Shuttle Atlantis on STS-132, which launched on 14 May 2010.
caption: The three astronauts of STS-131 and Tracy Caldwell (bottom left) of ISS Expedition 23, the first time four women being at the same time in space.[5]
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