Would You Go to Mars? Meet the Four Women Astronauts Who Can't Wait to Go
Would you take the trip? The average temperature on Mars is 81 degrees below zero. But scientists say that in 15 years, we may be able to visit, even live there. Pictured here, four who'd love a ticket: astronauts Nicole Aunapu Mann, Anne McClain, Jessica Meir, and Christina Hammock Koch, photographed at NASA's Johnson Space Center in Houston.