Who would have thought the innards of a galaxy could be so stunning? A new image captured by the Hubble Space Telescope of ESO 137-001, a spiral-shaped galaxy some 200 million light-years away from the Milky Way, reveals luminescent blue streaks trailing outwards from the system. The streaks are actually hot young stars, former members of ESO 137-001 being left behind as it moves through space and the heart of a galaxy cluster. The separation is caused by “ram pressure stripping,” a drag force similar to what you feel when you stick your head out the car window on the highway.
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