Saturn Becomes ‘Moon King’ with 20 New Discoveries

土星又发现了20个卫星,成为新的卫星之王

https://www.51voa.com/VOA_Special_English/Saturn-becomes-moon-king-with--new-discoveries-83064.html

2019-10-15

导读:以前木星有79颗卫星,为当之无愧的“卫星之王”;最近国际天文协会小行星中心宣布在土星新发现了20颗卫星,土星卫星数量达到82颗,成为太阳系新的“卫星之王”。

土星的卫星有好多颗(土星又发现了20个卫星)(1)

土星Saturn

1)The planet Saturn is being recognized as the "moon king" of our solar system. 土星成为咱们太阳系中新的“卫星之王”。

Saturn: 英 [ˈsætɜːn] 美 [ˈsætɜːrn] n.土星

土星(英文Saturn,拉丁文Saturnus):

土星的卫星有好多颗(土星又发现了20个卫星)(2)

土星

2)Jupiter used to hold the record for most moons orbiting around it. It has 79. But scientists in the United States have announced the discovery of 20 new moons around Saturn. That gives the planet a new total of 82 moons.

以前木星有最多的卫星,共有79颗,是太阳系里的“卫星之王”。但是美国的科学家宣布在土星周围发现了20个新卫星,这样土星就一共有82颗卫星。

3)The researchers made the discovery using the powerful Subaru telescope in Hawaii. They gathered information over a period of several years.

这个发现是研究人员在夏威夷用强大的斯巴鲁望远镜(亦称昴星望远镜)完成的,他们收集信息好几年了。

土星的卫星有好多颗(土星又发现了20个卫星)(3)

斯巴鲁望远镜(昴星望远镜)

斯巴鲁望远镜:

4)The team also used new computing models to identify moons and follow orbiting activity.

研究团队还使用了新型的电脑建模来确认卫星并跟踪其轨道活动。

5)The discovery was announced by the International Astronomical Union's Minor Planet Center. The center is responsible for identifying all the world's minor planets, comets and "outer natural satellites." The organization also measures the orbital movements of such objects.

该发现是由国际天文协会小行星中心宣布的。该中心负责确认世上所有的小行星、彗星和“外天然卫星”。这个机构还长期测量这些天体的轨道运动。

【注】天然卫星是指在围绕行星轨道上运行的天然天体。月球就是最明显的天然卫星的例子。在太阳系里,除水星和金星外,其他行星都有天然卫星。太阳系已知的天然卫星总数(不算构成行星环的碎块)至少超过100颗。天然卫星是指环绕行星运转的星球,而行星又环绕着恒星运转。

6)Researchers say the newly found moons are very small, measuring about five kilometers across. The team was able to discover them now because of better technology that became available in recent years. This includes more powerful telescopes and increased computing power.

研究人员说:这些新发现的卫星都非常小,直径大概在5千米。这个团队能发现这些卫星是因为近年来相关技术越来越好,包括愈加强大的望远镜和不断提高的计算机运算能力。

7)Saturn is a gas planet made up mostly of hydrogen and helium. It is the second-largest planet in the solar system and the sixth from the sun. It measures about 116,000 kilometers across.

土星是一颗气态行星,主要组成成分是氢和氦。是太阳系第二大行星、距日距离(由近到远)第6位,直径约11.6万千米。

土星的卫星有好多颗(土星又发现了20个卫星)(4)

太阳系八大行星(原图来自:头条号/地理沙龙)

土星的卫星有好多颗(土星又发现了20个卫星)(5)

原图来自:头条号/宇宙科学人


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