S: This doesnt have anything to do with the lecture, Dr. Brown. It's just something I was wondering about. T: I'm always glad to entertain questions. S: What I want to know is, with all our space exploration, aren't astronomers concerned that were po...
Some of you may be familiar with the Apollo programs geological studies of the moon during the 1960s. But you may not be aware of the _______research that ______ those studies. The work of two early researchers was very important in determining the n...
Most people think of astronomers as people who spend their time in cold ______ ______through telescopes every night. In fact, a typical astronomer spends most of his or her time analyzing data and may only be at the telescope a few weeks of the year....
Thank you. It's great to see so many of you interested in this series on Survival in Outer Space. Please excuse the cameras; we're being______for the local TV stations. Tonight I'm going to talk about the most basic aspect of survivalthe space suit....
So, why did what is now called modern dance begin in theUnited States? To begin to answer this question, I'll need to______a little bit and talk about classical______. By the late 1800's, ballet had lost a lot of its popularity. Most of the ballet da...
I'm sure almost every one of you looked at your watch orat a clock before you came to class today. Watches and clocks seem as much apart of our life as breathing or eating. And yet, did you know that watches andclocks were______in the United States u...
Welcome to Yellowstone National Park. Before we begin our nature walk today, I'd like to give you a short history of our National Park Service. The National Park Service began in the late 1800's. A small group of explorers had just completed a month-...
Today we'll examine the role that private transportation,______, the______plays in city planning. A number of sociologists blame the automobile for the decline of the downtown areas of major cities. In the 1950's and 1960's the automobile made it pos...
Let's ______ to the main exhibit hall and look at some of the actual vehicles that have played a ______role in speeding up mail delivery. Consider how long it used to take to send a letter across a relatively short distance. Back in the 1600's it too...
I want to welcome each and every balloon ______ to Philadelphia. Thank you for coming here this morning to _______ the first balloon ______ in the United States. On January 9, 1793, at ten o'clock in the morning, a silk balloon lifted into the skies...
