https://apnews.com/21b35a7267934ad65b83438ee80d06bd

CAPE CANAVERAL, Fla. (AP) — Four astronauts headed to Kennedy Space Center on Sunday for SpaceX’s second crew launch, coming up next weekend.

For NASA, it marks the long-awaited start of regular crew rotations at the International Space Station, with private companies providing the lifts. There will be double the number of astronauts as the test flight earlier this year, and their mission will last a full six months.