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Milky Way no freak accident, astronomers say Detailed study by University of Sydney astronomers of a galaxy 320 million light years away reveals striking similarities to our own home.
Panorama photo of the Milky Way at the European Southern Observatory in Chile. Photo: H. Hayer/ESO
The first detailed cross-section of a galaxy broadly similar to the Milky Way, published today, reveals that our galaxy evolved gradually, instead of being the result of a violent mash-up. The finding throws the origin story of our home into doubt.
The galaxy, dubbed UGC 10738, turns out to have distinct ‘thick’ and ‘thin’ discs similar to those of the Milky Way. This suggests, contrary to previous theories, that such structures are not the result of a rare long-ago collision with a smaller galaxy. They appear to be the product of more peaceful change.
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UWA and France on hunt for exploding stars
The University of Western Australia and the French Government are working together with industry and researchers to improve monitoring of space for exploding stars billions of light years away.
UWA is working with the Centre National d’Etudes Spatiales, the French Government’s space agency, to install a network of receiver stations across northern Australia. The stations will receive alerts from the Space Variable Objects Monitor satellite in high orbit above Earth. The satellite is sensitive to gamma ray bursts which signal massive stars exploding.
Within seconds an alert will be sent to telescopes, including the UWA Zadko Telescope, which will capture the rare events in the sky above northern Australia. The satellite stations across Australia fill a global blind spot, allowing scientists to access a unique part of the sky.