NASA’s SpaceX Crew-9 astronauts will discuss their science mission in a postflight news conference.NASA astronauts Nick Hague, Suni Williams, and Butch Wilmore returned to Earth on March 18.The news conference is scheduled for 2:30 p.m. EDT on March 31.During their mission, the crew conducted over 150 unique experiments, including plant growth studies and stem cell technology testing.