Description: [caption id="attachment_3071" align="aligncenter" width="300" caption="Spiral Galaxy Messier 81 (M81), 2003, Spitzer Space Telescope / IRAC, NASA / JPL-Caltech / S. Willner, Harvard-Smithsonian CfA"][/caption] You may in fact be, or just feel like, a big shot down here on earth. But, ever since airborne cameras started to photograph our little planet from above, and once they
Description: The Smithsonian Institution Archives YouTube channel has a new dedicated playlist for the Science Media Group Collection, which features videos from the Smithsonian Astrophysical Observatory program that was active from 1989 to 2013.