Boeing and NASA are set to launch the CST-100 Starliner spacecraft with astronauts aboard to the ISS on May 6, 2024.

The launch will be the 100th for United Launch Alliance's Atlas V rocket and its first supporting human spaceflight.

Astronauts Suni Williams and Butch Wilmore will conduct tests on the Starliner to certify it for future missions during their week-long stay on the ISS.

The Starliner mission is critical for NASA's goal of having two reliable human space transportation systems and for Boeing's reputation after recent setbacks.

Weather forecasts suggest a 95% chance of favorable conditions for the launch, with minimal concerns about cumulus clouds.