Episode 8 - A step closer to our origin   A step closer to our origin     13 September 2007   By scrutinising the Hubble Ultra Deep field - the deepest image of the sky ever made - the NASA/ESA Hubble Space Telescope and the NASA Spitzer Space Telescope have joined forces to discover nine of the smallest, faintest, most compact galaxies ever observed in the distant Universe. Play now | Download       Related Links  •  Hubblecast archive (http://www.spacetelescope.org/videos/hubblecast.html)  •  Subscribe to Hubblecast (http://www.spacetelescope.org/rss/vodcast.xml)  •  Subscribe to Hubblecast HD (http://www.spacetelescope.org/rss/vodcasthd.xml)  •  Subscribe to Hubblecast Full HD (http://www.spacetelescope.org/rss/vodcastfullhd.xml) Related links  •  Episodes 11-20 (http://www.esa.int/SPECIALS/ESApod/SEM3EC3MDAF_0_ov.html)