The Hubble Ultra Deep Field (HUDF) million-second-long exposure reveals the first galaxies to emerge from the so-called "dark ages",
the time shortly after the big bang when the first stars reheated the cold, dark universe.
How wide is the Ultra Deep Field's slice of the heavens?
The Hubble Ultra Deep Field is called a "pencil beam" survey because the observations encompass a narrow,
yet "deep" piece of sky. Astronomers compare the Ultra Deep Field view to looking through an eight-foot-long soda straw.
How sharp is Hubble's resolution in pinpointing far-flung galaxies in the Ultra Deep Field?
Hubble's keen vision (0.085 arc seconds.) is equivalent to standing at the U.S. Capitol and seeing the date on a quarter a mile away
at the Washington monument.
How many galaxies are in the image?
The image yields a rich harvest of about 10,000 galaxies.
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