NASA. LARGE FORMAT. Superb view of the galaxy... - Lot 227 - Vermot et Associés

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Lot n° 227
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NASA. LARGE FORMAT. Superb view of the galaxy... - Lot 227 - Vermot et Associés
NASA. LARGE FORMAT. Superb view of the galaxy cluster "BALLS CLUSTER". This cluster formed after the collision of two large galaxy clusters, the most energetic event known in the universe since the Big Bang. The hot gas is visible as two pink clusters in the image and contains most of the "normal", or baryonic, matter of the two clusters. The bullet-shaped cluster on the right is the hot gas of one cluster, which has passed through the hot gas of the other larger cluster during the collision. An optical image from Magellan and the Hubble Space Telescope shows the galaxies in orange and white. The blue areas in this image represent where astronomers find most of the mass in the clusters. The concentration of mass is determined by analyzing the effect of what is called gravitational lensing, where light from distant objects is distorted by intervening matter. Most of the cluster matter (in blue) is clearly separated from normal matter (in pink), providing direct evidence that almost all of the cluster matter is dark. The hot gas in each cluster was slowed down by a drag force, similar to air resistance, during the collision. In contrast, the dark matter was not slowed down by the impact because it does not interact directly with itself or with the gas except through gravity. Therefore, during the collision, the dark matter clusters in both clusters moved in front of the hot gas, producing the separation of dark matter and normal matter seen in the image. If the hot gas were the most massive component of the clusters, as proposed by alternative theories of gravity, such an effect would not be observed. Instead, this result shows that dark matter is necessary. 2009.period chromogenic print. Numbering in the margin on the front. Caption on label on back. 25.4 X 20.4CM with margins. NASA. LARGE FORMAT. Superb view of the galaxy cluster "climbing bullets". This cluster was formed after the collision of two large galaxy clusters, the most energetic event known in the universe from the Big Bang. The hot gas is visible in the form of two pink clusters on the image and contains most of the "normal", or baryonic material, both clusters. The bullet-shaped cluster on the right is the hot gas of a cluster, which has crossed the hot gas from the other larger cluster during the collision. An optical image of Magellan and Hubble Space Telescope shows orange and white galaxies. The blue areas of this image represent the place where astronomers find most of the mass in the clusters. The concentration of the mass is determined by analyzing the effect of what is called the gravitational lens, where the light of the remote objects is distorted by the intermediate material. Most of the cluster material (in blue) is clearly separated from the normal matter (in pink), which proves directly that almost all of the cluster matter is dark. The hot gas of each cluster was slowed down by a drag force, similar to the resistance of the air, during the collision. On the other hand, dark matter has not been slowed down by the impact because it does not intervene directly with itself or with gas, except by gravity. Therefore, during the collision, the black material clusters of the two clusters moved in front of the hot gas, producing the separation of dark matter and the normal matter that we see on the image. If the hot gas was the most massive component of the clusters, as the alternative theories of gravity propose, such an effect would not be observed. On the contrary, this result shows that dark matter is necessary. 2009. The chromogenic period of time. Numbering in the margin on the front. Legend on label on the back. 25.4 x 20.4cm with margins. NASA. Small format. Hervorragender Ansicht des Galaxie-Clusters "Klettern von Kugeln". This cluster was formed after the collision of two large galaxies, the energetic era that is known in the universe of the Big Bangs. The heavy gas is in the form of two pink clusters on the picture and contains the largest part of the "normal", golden-bearing materials, each cluster. Der kugelförmige Cluster rechts ist das heiße Gas eines Clusters, das das heiße Gas von dem anderen größeren Cluster während der Kollision überquert hat. Ein optisches Bild von Magellan- und Hubble-Weltraumteleskop zeigt orangefarbene und weiße Galaxien. Die blauen Bereiche dieses Bildes repräsentieren den Ort, an dem Astronomen den größten Teil der Masse in den Clustern finden. Die Konzentration der Masse wird durch Analysieren der Wirkung dessen, was als Gravitationslinse analysiert, bestimmt, wobei das Licht der entfernten Objekte durch das Zwischenmaterial verzerrt ist. Das meiste Amas-Material (in blau) ist eindeutig von der normalen Materie (in Pink) getrennt, was sich als direkt beweist, dass fast alle Amas-
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