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每日视频新闻:加州大火蔓延 旧金山电力受威胁

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The first satellite developed, operated by South Korea
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South Korea's Arirang-5 satellite has been launched atop a Russian Dnepr rocket.

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The launch took place at 8:39 pm,Thursday local time from Russia’s Dombarovsky launch site. Arirang-5 has successfully entered orbit and communicated with the control center on the ground.

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The satellite is expected to circle the earth 15 times a day in a sun synchronous orbit with an average altitude of 550 kilometers, regardless of weather conditions. It has a mission lifespan of five years.

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Arirang-5 is a radar imaging satellite, the first to be developed and operated by South Korea. The satellite has cost $212 million US dollars since 2005 to build.

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The satellite will be South Korea’s fourth multi-purpose satellite, but the first with synthetic aperture radar that will provide images of 1-meter resolution.

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文章关键字: 大火 加州 新闻 视频 每日

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