Houston, we have an announcement: It's World Space Week! This year, the theme is "Living in Space", so we're revisiting our best articles on the challenges and wonders of life in microgravity and on planets far from home.

Spaceflight Accelerates Aging of Human Stem Cells, Study Finds

The rigors of space travel could accelerate changes in the human body usually associated with aging.

According to a new study of human tissues sent into low-Earth orbit, time in space reduces cell production, exacerbates DNA damage, and increases the signs of aging in the telomeres that cap the ends of chromosomes.

Genetically Enhanced Humans May Be The Future of Space Travel

When considering human settlements on the Moon , Mars , and further afield, much attention is given to the travel times,

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