Photographer Page

Robert Markowitz

Twins Scott and Mark Kelly formed part of a study into the effects of spaceflight on human health. While Scott (right) was on the ISS, Mark remained on Earth – which meant an insightful physiological comparison was possible when Scott returned home.

NASA’s astronaut selection manager Anne Roemer stands with the most recent class of astronaut candidates selected in 2017 from more than 18,000 applicants. The 2017 class graduated this year.

Earth's shadow falls on the full moon during a total lunar eclipse in January 2018.

The space suits that astronauts would wear on the Martian surface are too bulky for the trip into orbit. Instead, they’ll don “intra-vehicular activity” suits.