Mark Kelly

February 16, 2019

Year in space put U.S. astronaut’s disease defenses on alert

Year in space put U.S. astronaut’s disease defenses on alert Nearly a year in space put astronaut Scott Kelly’s immune system on high alert and changed […]
January 17, 2019

How Healthy Do I Need to Be Before Heading to Space?

Astronaut to Mission Control: Houston, I think we have a problem. My blood pressure is a little bit high today. Let’s chalk this exchange up to […]
October 28, 2018

How Do Bones React in Space?

You’d think that floating around in space would be good for bones and joints because you aren’t putting any pressure on them, but in reality prolonged […]
September 19, 2018

To Avoid Vision Problems in Space, Astronauts Will Need Some Kind of Artificial Gravity

Ever since astronauts began going to space for extended periods of time, it has been known that long-term exposure to zero-gravity or microgravity comes with its […]
March 22, 2016

NASA’s Human Spaceflight Program Can’t Afford Another Reset From the Next President

NASA Administrator Charles Bolden likely expected a better reception when he testified before the Senate appropriators on March 10. After all, his agency had racked up […]
March 3, 2016

NASA's Scott Kelly Grew 2 Inches: The Body After a Year in Space

After living for nearly a year aboard the International Space Station, NASA astronaut Scott Kelly is two inches taller than his identical twin brother Mark. One […]
March 2, 2016

Astronaut Scott Kelly Back On Earth After Setting Record Space Flight

American astronaut Scott Kelly, 52, is safely back on Earth after spending 340 days in space—a record for an American spaceflight, reports Reuters. Kelly touched down […]
April 15, 2014

NASA to conduct unprecedented twin experiment

Consider a pair of brothers, identical twins. One gets a job as an astronaut and rockets into space. The other gets a job as an astronaut, […]
August 19, 2013

NASA's Twin Astronauts Volunteer as Guinea Pigs for Space Science

NASA’s only set of identical twin astronauts will have scientists seeing double in 2015 … literally. As Scott Kelly flies in space on ayear-long mission aboard the […]