This image of the Sun was taken on 12/11/13. In this image are many great examples of prominences, the wispy plumes just off the edge of the Sun, and filaments, the slightly darker lines snaking across the disk of the Sun. These are both the same phenomenon, viewed at different angles. Photo by Smithsonian staff, Phoebe Waterman Haas Public Observatory
On January 11, 2014, Venus passed between the Earth and the Sun. At that point, it was new, with its night side facing the Earth. This image from January 19, 2014 shows a slender crescent waxing Venus. We can see only a sliver of the daylit side. Photo by Smithsonian staff.
A composite image of the rising, reddish full Moon with fireworks on July 4th, as seen from the Pentagon in Washington, DC. (The images were taken separately and then put together; the Moon and fireworks did not appear together from this location) Photo credit: Emily Berkson.
Our Twitter follower @PhysiologicAli said their favorite night-sky sight was a lovely crescent Venus. This daytime photo from Iván Éder, courtesy of Astronomy Picture of the Day, shows both Venus and the Moon in crescent phase, moments before the Moon eclipsed Venus in 2004. This celestial event will happen again this Monday, 8/13/2012.