Figure 1.
Orbits of ARTEMIS spacecraft P1 (red) and P2 (green) from 2011 to 2015.
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.