"Does Schrödinger's cat really exist? You bet. The first ever quantum superposition in an object visible to the naked eye has been observed."
New findings from NASA's Chandra X-ray Observatory have provided a major advance in understanding a type of supernova critical for studying the dark energy that astronomers think pervades the universe.
This glowing stellar nursery is home to the most massive star yet found in the Milky Way galaxy.
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