天文學-土星Saturn

一、TOEFL高頻單字

significantly adv.值得注意地
tilt v.使傾斜
axis n.軸線
tend v.照料,傾向
hemisphere 半球體
chunk 相當大的部分(或數量)
descend v. 下降
pebbles 小卵石
versus prep. 與…相對
from edge to edge 從一邊到另一邊
stadium 體育場
prominent 顯著的
hydrogen n.氫氣

二、Script

  • Saturn is the second-largest planet and the sixth from the Sun. It is (地球)almost 10 times as far away from the Sun as Earth.
  • Saturn tilts significantly on its axis, and its winter hemisphere – the one tilted away from the Sun – tends to turn blue, while its summer hemisphere is yellow.
  • Saturn is surrounded by “a thin flat ring. Although they may look solid from a distance, the rings are actually made of many tens of thousands of pieces of ice, with some rock and dust in the mix. The larger chunks are about the size of a car, and from there they descend in size to pebbles, gravel, sand, and smoke.
  • They are about 60 feet thick versus an astonishing 180,000 miles from edge to edge. This ratio is comparable to that of a very thin sheet of paper extending across an area as large as a football stadium.
  • Similar in some ways to Jupiter, although calmer and smaller, Saturn is a gas giant, with an internal heat source and less-prominent clouds than Jupiter that are also made mostly of hydrogen.

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