Scientists who study panspermia used to concentrate only on assessing the basic plausibility of the idea, but they have recently sought to estimate the probability that biological materials made the journey to Earth from other planets or moons.
Scientists who study panspermia used to concentrate only on assessing the basic plausibility of the idea, but they have recently sought to estimate the probability that biological materials made the journey to Earth from other planets or moons.
研究胚种说的科学家过去只集中在评估这个概念原则上是否合理，但他们近来已尝试估算生物体自其他行星或卫星旅行到地球的可能性。