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.
Thumbnail image for an Image of the Week video, "Landsat's 12 Millionth Image" produced at the USGS Earth Resources Observation and Science (EROS) Center.
Public Domain.
