Some of you maybe familiar with the Apollo programs geological studies in the moon during the 1960’s, but you may not be aware of extensive research that preceded those studies. The work of two early researchers was very important in determining the nature of the surface of the moon. Back in 1892, a geologist, named Carlrove Gilbert, was challenging the prevailing views about the lunar surface. At that time, most scientists thought the craters of the moon had been created by the volcanic action. Gilbert made some careful telescopic studies. There was no spacecraft back then, so telescopes were the best way to observe the moon. He concluded that the lunar craters were so uniform that they had to be the result of the impact of falling bodies such as meteorites. I posted (the largement just) some of the drawings on the board. If you compare them to those in your text, you can see that his amazingly accurate. Still it’s contemporary rejected his work. 50 years later, a graduate student, named Wolf Baldwin, re-researched Gilbert’s species. He too met with the resistance and he left academics to run his family machinery business, but he didn’t give up his research. He worked alone at his spare time, and eventually wrote an influential book called “the face of the moon”. A young geologist who read it was so inspired that he persuaded NASA to incorporate geology into the Apollo missions. While the Apollo missions eventually confirmed most Baldwin’s ideas. Which is astonishing considering that he wasn’t a professional scientist.
請問紅色的部份的意思是???