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Ivasha

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description Ivasha Overview

Ivasha was a rhesus macaque used in the Bion 10 biological research mission, which orbited Earth from December 29, 1992, to January 7, 1993. The monkey flew with another rhesus macaque as part of experiments examining how spaceflight affected living organisms. The mission belonged to the long-running Soviet and Russian Bion program of recoverable biosatellites and took place during the early post-Soviet period.

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What was Ivasha's space mission?

Ivasha was one of two rhesus monkeys flown on the Russian biological research mission Bion 10, also called Cosmos 2229. NASA records give the launch date as December 29, 1992, from the Plesetsk Cosmodrome. [NASA mission record](https://ntrs.nasa.gov/citations/19970016838)

Who flew with Ivasha on Bion 10?

The other rhesus macaque was named Krosh, and the two animals were the mission's primate research subjects. Bion 10 also carried insects, amphibians, plants, and cell cultures. [NASA mission record](https://ntrs.nasa.gov/citations/19970016838)

What did scientists study with Ivasha in orbit?

The experiments examined bone, neuromuscular and vestibular function, metabolism, circadian rhythms, and immune response during spaceflight. NASA describes the rhesus monkeys as a test of how mammals adapt to microgravity and related biological stress. [NASA mission record](https://ntrs.nasa.gov/wp-content/uploads/2021/12/nasa-sp-2015-625.pdf)

Did Ivasha get sick in space?

NASA's space-life-science history reports that Ivasha developed space motion sickness during the first few days and consumed less food and juice than needed. The same record says Ivasha lost 13 percent of body weight during the flight, compared with 5 percent for Krosh. [NASA space-life-science history](https://history.arc.nasa.gov/hist_pdfs/lifeint1.pdf)

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