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1.The star's interstellar extinction rate is a key factor in its lifespan.
恒星的星际灭绝速率是其寿命的关键因素。
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2. The study of interstellar extinction has led to new insights into the origins of life on other planets.
对星际灭绝的研究已经揭示了在其他行星上生命起源的新见解。
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3.The team discovered that the interstellar dust could be responsible for the extinction of some species.
该团队发现星际尘埃可能是某些物种灭绝的原因。