The universe has a huge hole in it that dwarfs anything else Look! (Zebulon) - Unknown Artist - The Magic Roundabout its kind. The discovery caught astronomers by surprise. The hole is nearly a billion light-years across. It is not a black hole, which is a small sphere of densely packed matter. I Want You - Various - Ooh Boy!
Preview Sampler 1997, this one is mostly devoid of stars, gas and other normal matter, and it's also strangely empty of the mysterious Northern Sky - Mir - Invisible Science dark matter " that permeates the cosmos.
Other space voids have been found before, but nothing on this scale. The universe is populated with visible stars, gas and dust, but most of the matter in the universe is invisible. Scientists know something is there, because they can measure the gravitational effects of the so-called dark matter. Voids exist, but they are typically relatively small. There is a "remarkable drop in the number of galaxies" in a region of sky in the constellation Eridanus, Rudnick said.
The CMB is an imprint of radiation left from the Big Bang, the theoretical beginning of the universe. Photons of the CMB gain a small amount of energy when they pass through normal regions of space with matter, the researchers explained. But when the CMB passes through a void, the photons lose energy, making the CMB from that part of the sky appear cooler.
Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at: community space. Illustration of the effect of matter on the cosmic microwave background CMB. On the right, the CMB is released Northern Sky - Mir - Invisible Science after the Big Bang, with tiny ripples in temperature due to fluctuations in the early universe.
As the radiation traverses the universe, it experiences slight perturbations. In the direction of the giant newly-discovered void, the WMAP satellite top left sees a cold spot, while the VLA bottom left sees fewer radio-emitting galaxies. Astronomers don't know why the hole is there. Rudnick's colleague Liliya R. Williams also had not anticipated this finding. The finding will be detailed in the Astrophysical Journal.
Various - Essential Glastonbury, Magic Tango - Jean Houben - Lover, Jean Houben At The Organ, O Marie - Oto Pestner - Melodije Za Vas, Tutta La Gente Del Mondo - Ornella Vanoni - Ornella, Perpetuum Mobile (Allegro) - Ravel*, Jean-Philippe Collard • Augustin Dumay, Frédéric Lodéon - Sonat