Supernovae remnants can leave behind pulsars or spinning neutron stars that may produce gravitational waves.

超新星遗迹中可能还存留有脉冲星或自旋中子星，而这些都会产生引力波。

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Ever since astronomers discovered that supernova more than 50 years ago, they have been searching for more "missing" supernovae and their remnants.

天文学家已经发现那颗超新星50多年了，他们仍一直在寻找更多失踪的超新星和它们的残骸。

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Like detectives inspecting the scene of a bank heist, astrophysicists carefully study supernovae remnants for the clues they provide to the supernova explosion itself, hundreds of years ago.

FORBES: When A Supernova ... Fizzles

For example, neutron stars the extraordinarily dense remnants of stars that have exploded as supernovae often have nearby partners that orbit one another.

ECONOMIST: Fundamental physics