![]() Beckwith (STScI) and the HUDF Team FormationĪfter the Big Bang, the Universe was composed of radiation and subatomic particles. ![]() From the ground, we see very little in this spot, which is in the constellation Fornax.Ĭredit: NASA, ESA, S. ![]() Hubble observed a tiny patch of sky (one-tenth the diameter of the moon) for one million seconds (11.6 days) and found approximately 10,000 galaxies, of all sizes, shapes, and colors. The Hubble Ultra Deep Field (HUDF) shows this diversity. Other galaxies have elliptical shapes, and a few have unusual shapes like toothpicks or rings. Based on the immense gravity that would be required to explain the movement of stars and the energy expelled, the astronomers conclude that the center of the Milky Way is a supermassive black hole. At the center of the spiral, a lot of energy and, occasionally, vivid flares are being generated. ![]() Like more than two-thirds of the known galaxies, the Milky Way has a spiral shape. Our galaxy, the Milky Way, is typical: it has hundreds of billions of stars, enough gas and dust to make billions more stars, and at least ten times as much dark matter as all the stars and gas put together.
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