Image credit: NASA/CXC/Univ. de Liege/Y. Nael et al. This Chandra X-ray Observatory image shows Westerlund 2, a young star cluster with an estimated age of about one or two million years. Until recently little was known about this…
Credit: NASA, ESA and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration. Acknowledgement: Davide De Martin and Robert Gendler Hubble has snapped a spectacular view of M 66, the largest "player" of the Leo Triplet, and a galaxy with an unusual…
NGC 2440 is a planetary nebula ejected by a dying star, but it has a much more chaotic structure than NGC 2346. The central star of NGC2440 is one of the hottest known, with a surface temperature near…
