In late 2013, when the neutron star at the heart of one of our galaxy's oddest supernovae gave off a massive burst of X-rays, the resulting echoes--created when the X-rays bounced off clouds of dust in interstellar space--yielded a surprising new measuring stick for astronomers.
In late 2013, when the neutron star at the heart of one of our galaxy's oddest supernovae gave off a massive burst of X-rays, the resulting echoes--created when the X-rays bounced off clouds of dust in interstellar space--yielded a surprising new measuring stick for astronomers.
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