Our Sun Just Unleashed Its Strongest Solar Flare In A Decade

太阳爆发12年来最强耀斑 将影响卫星等飞行器安全
时间:2017-09-10 单词数:1940

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导读:9月6日晚上,太阳爆发X9.3级大耀斑,是自2005年以来最强的一次爆发活动,引发了太阳质子事件和日冕物质抛射。

太阳爆发12年来最强耀斑 将影响卫星等飞行器安全

On Wednesday, NASA recorded two massive solar flares — one was the biggest flare in 12 years. They were so powerful, they kept some radios from working for about an hour.

周三,美国宇航局拍摄到了两次高强太阳耀斑,这是12年来最强的太阳耀斑。耀斑的强烈程度使地球向阳面的无线电设备受到了约一小时的严重干扰。

The two solar flares shot out of a sunspot that’s seven Earths wide and nine Earths tall. Astronomers identified them as "X-class flares," which generate as much energy as millions of hydrogen bombs and emit enough radiation to interfere with high-frequency radio waves here on Earth.

这两次太阳耀斑从宽度约为地球7倍,高度约为地球9倍的太阳黑子中射出。天文学家称此次耀斑为“X级耀斑”,产生的能量相当于数百万氢弹的爆炸量,并发出足够的辐射剂量干扰地球上的高频无线电波。

Solar flares occur when the sun’s magnetic field suddenly releases energy, like a snapping rubber band. It sends huge amounts of energy and light into space.

当太阳的磁场突然释放出能量时就会产生太阳耀斑,就像一个折断的橡皮筋,然后将大量的能量和光送入太空。

The event is somewhat surprising because the sun is nearing a period of low activity it cycles through about once every 11 years.

但此次事件有些奇怪,因为太阳此时正邻近于11年活动周期的低活动阶段。

But there’s been quite a bit of activity on the star’s surface. The same sunspot sent five "sizable" solar flares total into the atmosphere since Monday.

但此次太阳表面却活动较为频繁。自周一开始,此太阳黑子已经发出了5个同级别的太阳耀斑。

Earth’s magnetic field shields us from the most dangerous effects of these giant explosions, but scientists think the flares might still trigger a geomagnetic storm. This could disrupt satellites, GPS navigation and even create auroras seen as far south as Ohio or Indiana.

地球的磁场可保护我们避免受到巨大爆炸造成的影响,但科学家认为耀斑仍可能会引发地磁风暴,并干扰卫星、GPS导航工作,甚至会引起像远在南方俄亥俄州或印第安纳发生过的极光现象。

来源:爱语吧爱语吧作者:Penny

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