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A new study found that microgravity simulated on Earth hindered sperm cell movement, egg fertilization and embryo development ‪—‬ findings that have serious implications for the future of space colonization.

When it comes to successful fertilization, zero gravity means zero game, a new study suggests. When looking at sperm and eggs in simulated microgravity, scientists found that this environment hampered sperm navigation, fertilization and embryo development, posing serious challenges for the future of space colonization.

This human, mouse and pig study, published Thursday (March 26) in the journal Communications Biology, revealed that sperm became disoriented, mouse eggs had fewer successful fertilizations, and pig embryos experienced developmental delays, all due to microgravity.

The findings have big implications for building a lasting human presence off Earth. The long-term settlements planned for the moon and Mars depend not just on keeping astronauts alive but on whether people can eventually reproduce

Sperm in microgravity

Previous studies have shown that microgravity can impair estrogen production and lower sperm count in mice. But what goes on at a cellular level when the sperm and egg float in near-zero gravity remains unclear.

To simulate microgravity, the researchers used a device called a clinostat machine, which works "by continuously rotating cells or samples in multiple directions, essentially randomising the direction of gravitational pull so rapidly that the cells never get a chance to settle or orient themselves," Nicole McPherson, a researcher who runs the Sperm and Embryo Biology Group at Adelaide University's Robinson Research Institute and the study's senior author, told Live Science via email. "From the cell's perspective, there is no consistent 'up' or 'down', it experiences a kind of continuous free fall, which closely mimics what living cells experience in the weightlessness of space."

With their space simulator, the researchers added human and mouse sperm to small mazes designed to mimic the female reproductive tract. In both cases, fewer sperm successfully navigated through the maze in microgravity compared with sperm that moved in Earth's gravity.

"Many of the proteins found on sperm act as mechanosensors, tiny molecular devices that detect physical forces," McPherson said. "Remove the force of gravity and it stands to reason that these sensors would be thrown off, disrupting the sperm's ability to orient and navigate."

oz4real83:
That won't stop astronauts from banging each other🤣🤣. The cheats among them will even be celebrating since the chances of pregnancy despite being without protection is zero😏

Ironfaceman:
Is like you did not read the write up well. With out gravity you can not bang.

Nlfpmod Seun Mynd44

Mosco100:
God is not stupid to have placed us here. Stay here. Take care of the earth.

Ironfaceman:
This is weird. That means in space a man can not Ejaculate.

This zero gravity must account for low libido and zero pregnancy in the international space station.

Truly God created a role for science.

Dogalmighty17:
This is why it is every important to go to school, pay attention and develop comprehension abilities. Where in the article you read was it said that men can't ejaculate in space?

oz4real83:
they never mentioned that humans can't bang in the article. They only mentioned the effects of micro gravity on sperm production, its movement, egg production,its movement, fertilization and embryo development.

oz4real83:
That won't stop astronauts from banging each other🤣🤣. The cheats among them will even be celebrating since the chances of pregnancy despite being without protection is zero😏