When massive stars die, they don't do so quietly.
"We directly saw motion of the pulsar in X-rays, something we could only do with Chandra's very sharp vision,""Because it is so distant, we had to measure the equivalent of the width of a quarter about 15 miles away to see this motion."
"We only have a handful of supernova explosions that also have a reliable historical record tied to them,"of the CfA,"so we wanted to check if G292.0+1.8 could be added to this group." This means it has taken a much shorter time to travel from the center of the supernova remnant, suggesting the supernova itself took place much more recently. Previous estimates put the date of the supernova at around 3,000 years ago; the new estimates take it to around 2,000 years ago.The revised velocity of the pulsar also allowed the team to conduct a new, detailed investigation into how the dead star might have been ejected from the center of the supernova.
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