The astronomical community has spent two decades wondering why the Crab Pulsar, the stellar remnant born from a supernova that Chinese and Japanese astronomers documented in the year 1054, emits radio ...
The star’s surface temperatures had increased by more than 1,000 degrees Celsius (1,800 Fahrenheit), turning its signature red color to yellow. It also shrank as a result of becoming hotter, going ...
An extraordinarily rare, gravitationally lensed supernova may offer a powerful new way to measure the universe’s expansion rate.
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