Now on a three-month, million-mile journey to its final orbit, NASA’s Nancy Grace Roman Space Telescope will soon reveal the universe’s darkest secrets. The mission launched at 7:26 a.m. EDT on Aug. 30 aboard a SpaceX Falcon Heavy rocket from Launch Complex 39A at the agency’s Kennedy Space Center in Florida.

Roman pairs a large field of view with crisp infrared vision to explore vast swaths of the sky and probe deeply into cosmic history. This flagship mission will help astronomers explore dark matter, dark energy, and worlds outside of our solar system, known as exoplanets.

Roman is the fourth primary mission NASA has launched on a Falcon Heavy rocket. Earlier this year, the agency’s Launch Services Program worked with SpaceX to accelerate the launch date to accommodate the space telescope’s early completion.