Liftoff Videos

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Tracy Caldwell Dyson

Portrait photograph of Tracy Caldwell Dyson

Photo: NASA / Public domain (US government work)

Tracy Caldwell Dyson is an American chemist and NASA astronaut, born on 14 August 1969. She was a mission specialist on Space Shuttle Endeavour on STS-118 in August 2007, and she has taken part in two long-duration missions to the International Space Station: Expedition 23 and 24 from April to September 2010, and Expedition 70 and 71 from March to September 2024. She has completed four spacewalks, logging nearly 24 hours outside. Wikidata records 372 days and 18 hours in space across three flights, the third on Soyuz MS-25.

Born
14 August 1969
Country
United States
Flights
3: STS-118 (2007), Soyuz TMA-18 (2010), Soyuz MS-25 (2024)
Time in space
372 days 18 hours
Stations visited
International Space Station, as part of Expedition 23, Expedition 24, Expedition 70, Expedition 71

Data as of 2 November 2026. Source: Wikidata (CC0). All people who have flown in space.

Videos on this topic

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  1. Inside the ISS: How the Station Is Built, Powered and Lived In

    SLICE Science
Play video: Inside the ISS: How the Station Is Built, Powered and Lived In

Inside the ISS: How the Station Is Built, Powered and Lived In

SLICE Science

Duration 1:04:57

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Dates are when each video was first published on YouTube.

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