Space travel accelerates the ageing of human stem cells, reveals new research. Spaceflight speeds up the ageing of cells which are “vital” to blood and immune system health, say American scientists.

On the Wednesday, Sept. 24, 2025 episode of The Excerpt podcast: Are humans on the precipice of not only being visitors to outer space, but also becoming permanent residents? Namrata Goswami, ...

Traveling to space is brutal on the body. Spaceflight can cause astronauts’ bones to lose density, their brain and eye nerves to swell, and their genes to change expression. Research suggests spending ...

Space travel accelerates the aging of human stem cells, reveals new research. Spaceflight speeds up the aging of cells which are "vital" to blood and immune system health, say American scientists. The ...

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 ...