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Circadian Light installed on ISS

The Circadian Light experiment developed by SAGA Space Architects from Copenhagen, Denmark includes a lamp designed to support the circadian rhythm of astronauts in space. ESA astronaut Andreas Mogensen installed the light inside his crew cabin on the third day of his stay in space

Circadian rhythm describes the physical, mental and behavioural changes our bodies undergo over a period of about 24 hours. Our internal clock is linked to the body’s core temperature, which varies throughout the day, and triggers our metabolism and sleep cycle.

Light exposure is obviously a factor influencing our rhythm as humans tend to wake up during the day and sleep at night.

The lamp is synchronised to Andreas’s sleep schedule and change lighting throughout the day. In the evening, when Andreas goes to sleep, the light will glow in red to simulate a calming sunset. In the morning, when Andreas wakes up, the light will turn blue, evoking the colours of a morning sky.

Photo: Andreas's sleeping quarters. ESA



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Senest opdateret 23. juni 2024