A new study with mice hints at a likely way to counter cartilage damage in long space journeys.

Expired medications could pose a challenge as space agencies plan for long-duration missions to Mars and beyond.

Astronauts should wait at least three years after longer missions to give their brains time to recover, a new study suggests.

Bone density loss is a problem for astronauts on long space flights. A new kind of lettuce astronauts could grow in space might solve the problem.

Back pain affects more than 50% of people who go to space, research indicates. The condition is now dubbed "space adaptation back pain."

After completing a confined 520-day simulated mission to Mars, researchers discovered significant changes in the crew's gut microbiota.

A new report digs into plans to protect our planet from alien microbes or cross-contamination from other worlds, also known as "planetary quarantine."

If you think social distancing is tough, imagine doing it in space. Veteran astronaut Michael E. Fossum offers some tips on coping with isolation.

What does the universe look like? Get the answer to this and other spacey questions straight from the experts in this video.

Following a study of astronaut twins and their gut bacteria, reserchers have found that spaceflight affects the microbiome in a consistent way.