Page 315 - NS-2 Textbook
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310 NAUTICAL SCIENCES
sphere, and other environmental factors. 21. How were the planets Neptune and Pluto discovered?
14. What important discovery about Mars was allegedly 22. What is unique about the magnetic fields of Uranus
made on Earth in 1996? and Neptune?
15. Which planet is the largest of our solar system? 23. What discovery aIUlounced in 2005 resulted in a
16. Why is space travel to Jupiter by astronauts not pos- new perception of the solar system?
sible in the foreseeable fuhlTe?
17. What is the probable composition of Jupiter?
Vocabulary
18. A. What is the Great Red Spot of Jupiter?
B. Why is the Red Spot of particular interest to sci- planet orbital period
entists? plane of the ecliptic perturbation
19. What were the significant discoveries made about almanac (celestial) Nix Olympica
Jupiter by the Galilea spacecraft and probe in the ephemeris ice volcanism
1990s? ellipse GalileaIl satellites
20. Why were the explorations of Saturn by PiaHeer 11 retrograde motion
and the two Voyager spacecraft of such importance?
