Astronauts Take a Break After Thrilling Spacewalk, ISS Soars Higher for Impending Spaceship Arrivals

Turning astronauts into Moon explorers

With a 'wiggle and nudge,' spacewalking astronauts install stubborn array mount outside space station

Arctic ground squirrels retain muscle and bone mass during extended hibernation — an ability that may have applications for the extreme of medically induced hibernation for astronauts in space missions