Tag: Space
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Kennedy: “I’m Not That Interested in Space”
In 1957, The USSR launched Sputnik to orbit the Earth. Two years later, in 1959, the USSR orbited the moon with Luna 3. By April of 1961, the USSR put the first man in space: Yuri Gagarin. The U.S. needed to respond. In spring 1961, President John F. Kennedy approved a mission to land a…
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The Universe in Perspective
The age of the universe is about 13.75 billion years. The diameter of the observable universe is estimated at about 28 billion parsecs (93 billion light-years). As a reminder, a light-year is a unit of length equal to just under 10 trillion kilometers (or about 6 trillion miles). The Observable Universe consists of the galaxies…