Posted: Tue, Jan 27, 2015, 8:05 AM ET (1305 GMT)

The X PRIZE Foundation announced Monday that it has awarded $5.25 million in "milestone prizes" to five teams participating in the Google Lunar X PRIZE competition. The prizes reward teams that achieved goals in the development of their landing, mobility, and imaging systems. Three teams each won $1 million for landing systems: Astrobotic, Moon Express, and Team Indus. Astrobotic and Moon Express, along with Hakuto and Part-Time Scientists, also won smaller prizes for imaging and/or mobility milestones. Those five teams, along with 13 others, are racing to be the first to land a privately-developed lander on the surface of the Moon, move at least 500 meters across the surface, and return videos and other data. The prize expires at the end of 2016.