Mercury retreats and what the American colonists saw when they didn't

<p>Mercury is leaving the evening sky.</p><p>Jupiter&#39;s still there but won&#39;t be for long.</p><p>Venus shines bright at dusk.</p><p>Mars and Uranus have a close call.</p><p>And find out what the people who didn&#39;t want to be British subjects anymore 250 years ago saw in the sky on July 4, 1776.</p>