Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
This picture of an astronaut investigating a rock on the Moon is on USGS circular 1507. The photo triggers the imagination of finding and taking advantage of resources on the Moon, to further space travel and/or work toward human goals to live beyond Earth.
Public Domain.
