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Related Experiment Video

Updated: Jul 16, 2026

Exploring the Effects of Spaceflight on Mouse Physiology using the Open Access NASA GeneLab Platform
11:08

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Published on: January 13, 2019

Animals and spaceflight: from survival to understanding.

E R Morey-Holton1, E L Hill, K A Souza

  • 1NASA Ames Research Center, Moffet Field, CA 94035-1000, USA. eholton@mail.arc.nasa.gov

Journal of Musculoskeletal & Neuronal Interactions
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PubMed
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Animal spaceflight research, beginning with dogs, proved space survivability and paved the way for human missions. Studies explore how reduced gravity impacts animal development and musculoskeletal health.

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Area of Science:

  • Space Biology
  • Aerospace Medicine
  • Comparative Physiology

Background:

  • Animal research has been integral to spaceflight since its inception, with early missions demonstrating survivability.
  • Initial animal flights, like the Russian dog missions, were crucial precursors to human space exploration.
  • Animals serve as vital human surrogates in understanding the physiological effects of the space environment.

Observation:

  • Early space missions utilized animals to test the feasibility and safety of space travel.
  • Subsequent research focused on the biological consequences of reduced gravity on living organisms.
  • Key areas of investigation include animal development, musculoskeletal changes, and fracture healing in space.

Findings:

  • Animal experiments confirmed the possibility of survival and task performance during spaceflight phases.
  • Reduced gravity environments significantly alter animal development and physiology.
  • Studies reveal insights into bone density loss and impaired fracture repair under microgravity conditions.

Implications:

  • Animal research provides critical data for safeguarding human health during long-duration space missions.
  • Understanding spaceflight's impact on musculoskeletal systems is essential for astronaut health and future space exploration.
  • This research informs therapeutic strategies for conditions like osteoporosis and aids in fracture healing research on Earth.