摘要 : A few years ago I was thrilled when my step-daughter Kara unexpectedly arrived with her mom to join me at the Oregon Star Party for a few days. Upon seeing the Trifid Nebula (M20) for the first time she said, "Howie, it looks just... 展开 A few years ago I was thrilled when my step-daughter Kara unexpectedly arrived with her mom to join me at the Oregon Star Party for a few days. Upon seeing the Trifid Nebula (M20) for the first time she said, "Howie, it looks just like a dogwood blossom." I'd always thought it resembled a four-leaf clover, and not knowing what a dogwood blossom looks like, her comparison came as a surprise to me. 收起