M33, Jupiter's Ghost and Arp 274
From left to right, M33 galaxy, a planetary nebula called "Jupiter's Ghost," and a group of galaxies called Arp 274.
›  Spitzer image | ›  Galaxy Evolution Explorer image | ›  Hubble image
New NASA/JPL images from two missions and a Hubble camera are being released today as part of an International Year of Astronomy event.

More information about the webcast can be found at http://100hoursofastronomy.org/ .