Scientists have unveiled an extraordinary picture of the early universe in an image snapped by the Hubble Space Telescope that looks deep into the cosmos. Experts at the Space Telescope Science Institute said on Tuesday the image dated back 13 billion years to just 700 million years after the Big Bang. Hubble has looked back in time before, but this image, known as the Ultra Deep Field, is the most profound vision the orbiting telescope has ever captured. The new picture looks like a scattering of jewels on black velvet, but is in fact 10,000 galaxies crammed into a section of sky about one-tenth the size of the full moon.