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Expedition 23 crew members, from left, NASA's Tracy Caldwell Dyson, Russian Alexander Skvortsov and Russian Mikhail...
Expedition 23 Flight Engineer Mikhail Kornienko of Russia, top, NASA Flight Engineer Tracy Caldwell Dyson of the...
Expedition 23 crew members, from left, NASA’s Tracy Caldwell Dyson, Russian Alexander Skvortsov and Russian Mikhail...
Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24...
Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24...
Expedition 23 Flight Engineer Tracy Caldwell Dyson waves farewell to well wishers as she departs the Cosmonaut Hotel...
Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24...
JSC2009-E-226213 (28 Oct. 2009) --- Astronaut Tracy Caldwell, Expedition 23/24 flight engineer, gets help in the...
NASA Deputy Administrator Lori Garver, far left at table, answers a students question at a Women's History Month...
Expedition 23 crew members NASA’s Tracy Caldwell Dyson (second from left), Russian Alexander Skvortsov and Russian...
Expedition 23 Flight Engineer Tracy Caldwell Dyson, left, and Soyuz Commander Alexander Skvortsov wave farewell to...
NASA astronaut Tracy Caldwell Dyson, moderates a panel discussion with NASA Administrator Jim Bridenstine, NASA...
NASA Administrator Jim Bridenstine speaks at the "Future of Space" STEM event, Monday, April 29, 2019 at NASA...
Expedition 23 Flight Engineer Tracy Caldwell Dyson talks with family and colleagues from behind glass prior to her...
Expedition 23 NASA Flight Engineer Tracy Caldwell Dyson, left, talks with Soyuz Commander Alexander Skvortsov of...
Expedition 23 Flight Engineer Tracy Caldwell Dyson, left, Expedition 23 Soyuz Commander Alexander Skvortsov and...
Expedition 23 crew members NASA Flight Engineer Tracy Caldwell Dyson, left, Soyuz Commander Alexander Skvortsov and...
S118-E-09265 (18 Aug. 2007) --- Astronauts Barbara R. Morgan (left) and Tracy Caldwell, both STS-118 mission...
JSC2009-E-226238 (28 Oct. 2009) --- Attired in training versions of their Extravehicular Mobility Unit (EMU)...
S118-E-06141 (11 Aug. 2007) --- Astronaut Tracy Caldwell, STS-118 mission specialist, works the controls of the...
S118-E-06142 (11 Aug. 2007) --- Astronaut Tracy Caldwell, STS-118 mission specialist, refers to a procedures...
The crew of Expedition 23 are seen on a large TV screen in the Russian Mission Control Center in Korolev, Russia,...
NASA astronaut Tracy Caldwell Dyson, left, moderates a panel discussion with NASA Administrator Jim Bridenstine,...
NASA astronaut Tracy Caldwell Dyson, left, moderates a panel discussion with NASA Administrator Jim Bridenstine,...