Marilyn Stewart, this is Harry Bennett.
Marilyn Stewart,這是Harry Bennett。
Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round it and also provide the perfect conditions for life forms to develop.
反之,如果恒星很小,維持生命的行星就要在離恒星很近的軌道上運行,而且要有極好的條件才能使生命得以發展,