Gas and dust flowing from stars can, under the right conditions, clash with a star's surroundings and create a shock wave. Now, astronomers using the European Southern Observatory's Very Large Telescope (ESO's VLT) have imaged a beautiful shock wave around a dead star—a discovery that has left them puzzled. According to all known mechanisms, the small, dead star RXJ0528+2838 should not have such a structure around it. This discovery, as enigmatic as it's stunning, challenges our understanding of how dead stars interact with their surroundings.
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