كانت هناك مجموعتين من الأشخاص المهتمين بذلك: علماء الكواكب الذين يبحثون في الأعلى وأشخاص آخرين يبحثون في الأسفل
There were two groups of people who were interested in this: planetary scientists, who want to look up, and then other people, who wanted to look down.