Mark Kelly
Kamala Harris Secures Democratic Presidential Nomination, Running Mate Announcement Expected Soon
US Vice President Kamala Harris has officially secured the Democratic presidential nomination, according to reports from AP and AFP. This announcement follows US President Joe Biden's recent decision to withdraw from the race.
Scott Kelly Spent a Year in Space, and Now He Has Different DNA Than His Identical Twin Brother
Scott and Mark Kelly are identical twin brothers — at least, they were until Scott spent a year living in space.
Early results from NASA’s Twins Study: Space encourages gene expression
NASA has announced some preliminary results from its Twins Study, an effort to study the effects of space travel on human health. The early findings suggest space travel boosts methylation, the process of switching genes on and off.
NASA sent one identical twin brother to space for a year and studied how it changed him
Last March, NASA astronaut Scott Kelly returned to Earth after spending nearly one year in space. During his 340 days aboard the International Space Station, or ISS, scientists were also observing Scott’s identical twin brother, Mark Kelly, while he hung out on Earth.