Astronomy_1_worksheet_4_part_13 - F i gur e 16 Blue Uranus...

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Figure 16 – Blue Uranus 7. Uranus 1. To go to our 7 th planet from the Sun, Uranus (pronounced YOURanos), we have programmed the Celestia 2 to take you there at hyperlight speed. Click here . Time is speeded up at 100x faster . On the worksheet, name any three things you immediately notice about Uranus. Go to Worksheet. 2. Uranus is the third of the four giant gas planets. Its name comes from the Greek for their supreme God, Uranus, the father of all Gods. Like Jupiter and Saturn, it is 4.6 billion years old, has a small rocky core with no solid surface and is composed primarily of a frigidly cold liquid hydrogen, helium, methane, ammonia and water slush that becomes gas nearer its cloud tops. However, it has more methane in its thick atmosphere than either Jupiter or Saturn, which gives it a beautiful pale blue color (methane absorbs red light and reflects blue light). 3. In 1986, NASA’s Voyager 2 spacecraft was the only spacecraft from Earth ever to fly close to Uranus. It took spectacular pictures. One of the reasons it took a long time to
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Astronomy_1_worksheet_4_part_13 - F i gur e 16 Blue Uranus...

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