Sci-Tech

Missile defense refers to a military system that finds and destroys incoming missiles before they hit their targets

NASA also cancelled an effort to upgrade its Space Launch System rocket to ​instead focus on increasing ‌that rocket’s production and flight rate, which has been slow relative to newer rockets

Last month’s medical evacuation was NASA’s first in 65 years of human spaceflight; one of four astronauts launched by SpaceX last summer suffered what officials described as a serious health issue, prompting their hasty return

He would ⁠not be travelling due to “unforseen circumstances,” the ‌company’s media agency in ​India, MSL, said