While imaging the Trifid Nebula, Europe's VISTA infrared telescope peered through our galaxy's dusty center to reveal two new Cepheid Variable stars. Such stars brighten and fade predictably, giving astronomers a distance measuring tool.
While imaging the Trifid Nebula, Europe's VISTA infrared telescope peered through our galaxy's dusty center to reveal two new Cepheid Variable stars. Such stars brighten and fade predictably, giving astronomers a distance measuring tool.
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