Fate of human survival beyond Earth: This mice-sperm experiment could reveal if humans can reproduce in space

Mouse sperm samples, protected against radiation, are stored on the ISS. (Image: Canva)

Efforts to understand life beyond Earth take a bold step. Scientists aim to study reproduction in space using innovative experiments. Freeze-dried mouse sperm aboard the International Space Station (ISS) might reveal crucial insights about mammals’ ability to procreate beyond Earth.

Space Preservation: Securing Genetic Legacy

Professor Teruhiko Wakayama, from Japan’s University of Yamanashi, is leading the study. His team aims to preserve Earth’s genetic material in space. Mouse sperm samples, protected against radiation, are stored on the ISS. These specimens will return to Earth in 2025 for analysis.

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The research explores if freeze-dried sperm can survive long-term in space. Previous experiments showed these samples can remain viable for 200 years. Wakayama is now testing improved protection to extend their lifespan indefinitely. He envisions preserving genetic material safely on the Moon or other celestial locations.

Pioneering Studies in Space Biology

Wakayama’s experiments extend his groundbreaking reproductive research. In 1997, he helped clone the first mouse from adult cells. His team also developed techniques for studying embryos in microgravity. Using space-preserved sperm, they previously produced healthy baby mice on Earth.

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His latest initiative focuses on in vitro fertilisation (IVF) aboard the ISS. A device under development will enable astronauts to perform rodent IVF experiments. Wakayama believes these studies will be vital for humankind’s future in space.

Preparing for Space Colonisation

As space exploration advances, scientists face complex challenges. Reproduction in microgravity raises critical questions for long-term survival. Embryo development may falter without gravity’s directional pull. Radiation could damage DNA, increasing the risk of abnormalities.

Wakayama’s work could also inform transporting animals for food or companionship. While there are broader health concerns for astronauts, these studies are vital for eventual colonisation.

The findings may determine if life can thrive beyond Earth. Wakayama remains hopeful, saying, “If it doesn’t work, we must address the challenge.”