Astronomy Picture of the Day . Jet Approaching a Crescent Moon . ... On the left, an airplane cruises through the atmosphere leaving a contrail in its wake. ... The above image is framed by an eerie gray sky, too close to day to be blue, too close to night to be black. ... NASA Web Site Statements, Warnings, and Disclaimers . ... U. Based on Astronomy Picture Of the Day . Publications with keywords: Moon . Publications with words: Moon . ... Bright Planets, Crescent Moon . ...