A rendering of an american satellite.
NRO
From NRO JR <a rel="nofollow" class="external text" href="http://www.nrojr.gov/main.html">book</a> on <a rel="nofollow" class="external text" href="http://www.nrojr.gov/sats/satellites.html">Satellites</a> for their <a rel="nofollow" class="external text" href="http://www.nrojr.gov/k_5.html">k-5th Grade</a> program