The flight was scrubbed on Wednesday night, and the astronauts will return to the launchpad for their trip to the International Space Station.

NASA’s newest space telescope, called SPHEREx, finally got off the ground this week, after a series of delays that had stalled its launch since late February. From low-Earth orbit, it will gather data on millions of stars and galaxies—and search for the ingredients of life.

The Crew-10 mission will send four astronauts to the space station to take over for Butch Wilmore and Suni Williams’ crew, finally allowing their return home.