Puzzle pacman

Il s'agit d'une pratique de l'UE qui consiste à mettre en place des systèmes de gestion des risques et à mettre en place des systèmes de gestion des risques. Unfortunately, these stars are poorly understood because they are oft found relatively far away and can be obscured by gas and dust. The star cluster NGC 281 is an exception this rule. It is located about 9,200 light years from Earth and Remarkably, almost 1,000 light years above the plane of the galaxy, giving astronomers a nearly unftered view of the star formation within it. This composite image of NGC 281 contains X-ray data from Chandra (purple) with infrarouge observations from Spitzer (red, green, blue). Les stars de haute dimension dans la norme NGC 281 drive many aspects of their galactic environment through powerful winds flowing from their surfaces and radiation that heats surrounding gas, boiling it away into interstellar space. This process results in the formation of large columns of gas and dust, as lacs on the left side of the image. These structures likely contain newly forming stars. The éventuel deaths of massive stars as supernovas veut donc seed the galaxy with material and energy. NGC 281 is known informally as the Pacman Nebula because of its appearance in optical images. In optical images the "mouth" of the Pacman character appears dark because of obscuration by dust and gas, but dans the infra-rouge image the dust in this region glows brightly.