A new study found that microgravity simulated on Earth hindered sperm cell movement, egg fertilization and embryo development ...

A new study suggests humans face barriers to reproducing in space, with microgravity disrupting sperm movement.

Knowing which way is up helps sperm find their way to an egg, new research indicates, and they struggle without the guidance ...

If you’ve ever dreamed of going to space, watch this first. In this episode of The Limit, we investigate the brutal reality behind the dream of space colonization. We talk to astronauts, scientists, ...

The vision of Mars colonization is moving from science fiction into real-world planning, with multiple space agencies preparing for long-term human presence. Modern Mars missions focus on testing ...

Three books push back on a rising tide of optimism about space settlements. Elon Musk and Jeff Bezos are bitter rivals in the commercial space race, but they agree on one thing: Settling space is an ...

Purchased with funds from the S. Dillon Ripley Endowment. "Dark Skies is the first work to assess the full impacts of space expansion, past, present and future. Thinking about space, and the visions ...