Large scale structure of dark matter: This shows the distribution of dark matter in the Universe. The brightness of clumps corresponds to the density of mass. The map covers an area of sky nine times the angular diameter of the full Moon, and is the largest sample of the distribution of dark matter ever obtained. It demonstrates how normal matter - including stars, galaxies and gas - is built inside an underlying scaffolding of dark matter. The comparison of dark matter and normal matter will provide critical observational underpinnings to future theories for how structure formed in the evolving Universe under the relentless pull of gravity. The map was derived from the Hubble Space Telescope's largest ever survey of the Universe, the Cosmic Evolution Survey ("COSMOS"), carried out by an international team of 70 astronomers. In making the COSMOS survey, Hubble photographed 575 adjacent and slightly overlapping views of the universe using theAdvanced Camera for Surveys' (ACS) Wide Field Camera onboard Hubble. It took nearly 1,000 hours of observations. The distances to the galaxies were determined from their spectral redshifts, using ESO's Very Large Telescope, the Subaru and CFHT telescopes in Hawaii and the Magellan telescope in Chile.

Name: COSMOS
Type: Early Universe : Nebula : Appearance : DarkEarly Universe : Cosmology : Morphology : Large-Scale Structure
Category: Cosmology
Constellation: Sextans
Release date: 7 January 2007, 19:30
Credit: NASA, ESA and R. Massey (California Institute of Technology)

The full COSMOS survey field: This image shows the full COSMOS field at one tenth resolution. COSMOS - the Cosmic Evolution Survey - is the Hubble Space Telescope's largest ever survey of the Universe and was carried out by an international team of 70 astronomers. In making the COSMOS survey, Hubble photographed 575 adjacent and slightly overlapping views of the universe using the Advanced Camera for Surveys' (ACS) Wide Field Camera onboard Hubble. It took nearly 1,000 hours of observations. The distances to the galaxies were determined from their spectral redshifts, using ESO's Very Large Telescope, the Subaru and CFHT telescopes in Hawaii and the Magellan telescope in Chile. At full resolution the image would be 100,800 x 100,800 pixels. The image was taken in near-infrared light (Hubble's F814W, or I-band, filter).

Name: COSMOS FIELD
Type: Early Universe : Cosmology : Morphology : Deep Field
Category: Cosmology
Constellation: Sextans
Release date: 7 January 2007, 19:30
Credit: NASA, ESA and A. Koekemoer (STScI)

Excerpt of the COSMOS survey in full resolution: This image shows an excerpt of the COSMOS survey in full resolution. COSMOS - the Cosmic Evolution Survey - is the Hubble Space Telescope's largest ever survey of the Universe and was carried out by an international team of 70 astronomers. In making the COSMOS survey, Hubble photographed 575 adjacent and slightly overlapping views of the universe using the Advanced Camera for Surveys' (ACS) Wide Field Camera onboard Hubble. It took nearly 1,000 hours of observations. The distances to the galaxies were determined from their spectral redshifts, using ESO's Very Large Telescope, the Subaru and CFHT telescopes in Hawaii and the Magellan telescope in Chile. The full COSMOS image in full resolution would be 100,800 x 100,800 pixels. The image was taken in hear-infrared light (Hubble's F814W, or I-band, filter).

Name: COSMOS
Type: Early Universe : Cosmology : Morphology : Deep Field
Category: Cosmology
Constellation: Sextans
Release date: 7 January 2007, 19:30
Credit: NASA, ESA and A. Koekemoer (STScI)

Excerpt of the COSMOS survey in full resolution: This image shows an excerpt of the COSMOS survey in full resolution. COSMOS - the Cosmic Evolution Survey - is the Hubble Space Telescope's largest ever survey of the Universe and was carried out by an international team of 70 astronomers. In making the COSMOS survey, Hubble photographed 575 adjacent and slightly overlapping views of the universe using the Advanced Camera for Surveys' (ACS) Wide Field Camera onboard Hubble. It took nearly 1,000 hours of observations. The distances to the galaxies were determined from their spectral redshifts, using ESO's Very Large Telescope, the Subaru and CFHT telescopes in Hawaii and the Magellan telescope in Chile. The full COSMOS image in full resolution would be 100,800 x 100,800 pixels. The image was taken in hear-infrared light (Hubble's F814W, or I-band, filter).

Name: COSMOS
Type: Early Universe : Cosmology : Morphology : Deep Field
Category: Cosmology
Constellation: Sextans
Release date: 7 January 2007, 19:30
Credit: NASA, ESA and A. Koekemoer (STScI)