Scientists urge space reproduction planning

By Alimat Aliyeva

As humanity moves from short-term space missions toward extended
stays beyond Earth—driven by commercial ambitions for lunar bases
and eventual Martian settlements—scientists are increasingly
confronting how the conditions of space may affect human
reproduction, Azernews reports, citing foreign
media.

A new study argues that the lack of clear evidence and shared
standards for reproductive health beyond Earth has pushed the issue
from an abstract possibility into what the authors describe as an
“urgently practical” concern.

Rather than advocating for conception in space, the study’s nine
authors—experts in reproductive medicine, aerospace health, and
bioethics—aim to identify foreseeable risks and highlight gaps in
research and governance that could become problematic as human
activity in space expands, particularly if technological and
commercial momentum outpaces ethical oversight.

“As human presence in space expands, reproductive health can no
longer remain a policy blind spot,” said study co-author Fathi
Karouia, a senior research scientist at NASA, in a statement.

“International collaboration is urgently needed to close
critical knowledge gaps and establish ethical guidelines that
protect both professional and private astronauts—and ultimately
safeguard humanity as we move toward a sustained presence beyond
Earth.”

IVF in space?

More than half a century ago, two breakthroughs reshaped ideas
about what was biologically and physically possible: the first
human landing on the Moon and the first successful fertilization of
a human egg outside the body through in vitro fertilization
(IVF).

“Now, more than fifty years later, we argue in this report that
these once-separate revolutions are colliding in a practical and
underexplored reality,” said Giles Palmer, the study’s lead author
and a senior clinical embryologist at the International IVF
Initiative.

“IVF technologies in space are no longer purely speculative,”
Palmer added. “They represent a foreseeable extension of
technologies that already exist.”

Over the same period, spaceflight has evolved from an elite,
male-dominated endeavor tied to national prestige into a rapidly
expanding frontier shaped by commercial ventures and international
collaboration. Alongside career astronauts, private citizens are
now flying on commercial missions, while space agencies and private
companies are planning a sustained human presence beyond low Earth
orbit.

At the same time, assisted reproductive technologies have become
more advanced, automated, and widely accessible. Yet, the
researchers note, fundamental biological questions about
reproduction remain unanswered—especially in the context of
long-duration space missions.

“As human activity shifts from short missions to sustained
presence beyond Earth, reproduction moves from an abstract
possibility to a practical concern,” Palmer said.

What scientists do know from limited laboratory experiments and
astronaut data is that space presents a demanding environment for
human biology. Exposure to cosmic radiation, altered gravity,
disrupted circadian rhythms, psychological stress, and prolonged
isolation all pose potential risks to reproductive function in both
women and men.

Radiation is among the most serious concerns. Unlike on Earth,
where the atmosphere and magnetic field provide substantial
protection, astronauts are exposed to galactic cosmic rays and
solar radiation. Reproductive tissues are particularly sensitive to
DNA damage, and the effects of cumulative radiation exposure on
male fertility during extended missions represent what the authors
describe as a “critical knowledge gap.”

Currently, there are no widely accepted, industry-wide standards
for managing reproductive health risks in space. The researchers
highlight unresolved questions surrounding the prevention of
unintended early pregnancy during missions, the fertility impacts
of microgravity and radiation, and the ethical boundaries of any
future reproduction-related research beyond Earth.

“If reproduction is ever to occur beyond Earth,” the study
concludes, “it must do so with a clear commitment to safety,
transparency, and ethical integrity.”

The research was published on February 3 in the journal
Reproductive Biomedicine Online.

An added perspective

Some scientists note that discussions about reproduction in
space extend beyond medicine and technology into fundamental
questions about humanity’s future as a multiplanetary species. The
possibility of children being conceived—or even born—beyond Earth
would require rethinking concepts such as citizenship, human
rights, and biological adaptation. In this sense, reproductive
science may become one of the defining factors in determining
whether space exploration remains a temporary human venture or
marks the beginning of a truly off-world human civilization.