Space travel has always been a center of attention within the scientific community. Even the tech moguls are racing to build AI-powered data centers in space.
Elon Musk envisions expanding human civilization beyond Earth by creating interplanetary species. For this to happen, one question is of great importance: can people imagine themselves in space?
This is the big question that scientists are trying to answer. In a recent study, researchers in Australia explored this possibility.
Using a ‘plastic obstacle course’ that mimics the female reproductive tract, scientists from the University of Adelaide tested human and mouse sperm in simulated space conditions to find out whether sperm would have difficulty ‘navigating’ during sex in space.
Nicole McPherson, a researcher at the University of Adelaide, said: “Sperm must actively find their way to an egg, and this study is the first to test that ability under space-like conditions.”
This is evident from research results published in the journal Communication Biologysome resilient sperm cells were able to stay the course, highlighting the possibility of fathering children in space.
On the other hand, the sperm cells were 50 percent worse at navigating the simulated reproductive tract compared to Earth’s gravity.
The difficulty in staying on course led to an approximately 30 percent drop in successful fertilization rates.
And the successful sperm that completed the course were of high quality and could produce the very suitable embryos.
The recent study suggests that the stress of microgravity acted as a filter, effectively allowing only the most capable sperm to run,” McPherson explains.
Main challenges
The study is not without challenges. The most critical challenge appears to be the first 24 hours after fertilization, during which embryo development significantly decreases in quality and quantity without Earth’s gravity.
“The results returned sharply, with fewer embryos forming, and those that did were of poorer quality,” she said.
Implications for space colonization
The study suggests that protecting embryos from weightlessness during the “critical first hours” will be essential for successful reproduction on the moon or Mars.
As organizations like NASA and SpaceX (Elon Musk) focus on interplanetary life, experts emphasize that more research is needed to unravel the mystery of reproduction in space, adding that fertilization was “one small piece of a very long and complex puzzle.”
Ms McPherson added: “We are still a long way from seeing the first space baby.”
