TIME a Year in Space: Inside Scott Kelly’s Historic Mission—Is Travel to Mars Next?

Go inside one of the most historic space missions ever in A YEAR IN SPACE, the new special edition from TIME, written by Apollo 13 author Jeffrey Kluger. A YEAR IN SPACE chronicles astronaut Scott Kelly’s 340 days aboard the International Space Station (ISS) as part of NASA’s exploration of the challenges of extended spaceflight. The most pressing question: Could humans endure the two-and-a-half-year trip to Mars and back?

While science has some understanding of how space and zero gravity affect the human body, Scott and his twin brother, Mark, a retired astronaut who remained on Earth, have served as the perfect test and control subjects to explore these effects.

This special edition, the companion piece to the TIME and PBS documentary series A Year in Space, provides exclusive coverage coupled with abundant photographs, many taken by Scott Kelly himself.

Highlights include:

• An inside look at how Kelly conducted experiments aboard the ISS and how he spent his downtime.
• Landscape Mode: Breathtaking photographs taken by Scott Kelly from 250 miles above the Earth’s surface.
• In interview with Samantha Cristoforetti, the first woman to spend 200 days in space, who spoke with TIME about her journey.