Space travel has taught us valuable lessons for living and working in outer space, specifically regarding how microgravity (often mistakenly called zero-gravity) impacts the human body during short- and long-term spaceflight. This includes decreased muscle and bone mass, fluid shifts, reduced heart rate, psychological health, compromised immune system, and radiation exposure. But with agencies like NASA aspiring to build a lunar base and establish a long-term presence on the Moon, and eventually Mars, how could space travel impact potentially having babies in space? Now, a team of researchers from Australia dares to address growing concern, as they performed a series of laboratory experiments designed to simulate microgravity and how it impacts sperm fertilization using sperm samples from a human, pig, and mouse over a four-hour period.…