Two robotic landers are set to begin their journeys to the moon Wednesday morning, when they launch aboard a SpaceX rocket from NASA's Kennedy Space Center.

Firefly’s Blue Ghost — named after a species of U.S. Southeastern fireflies — should reach the moon first. The 6-foot-6-inches-tall (2-meter-tall) lander will attempt a touchdown in early March at Mare Crisium, a volcanic plain in the northern latitudes.