NASA发布“来自黑洞的声音”,网友表示:不想听第二次
当地时间8月22日,美国国家航空航天局发布了一段音频片段,声音是由2亿光年外的英仙座黑洞的压力波而合成的。不少美国网友表示听完觉得毛骨悚然。
What does a black hole sound like? Both "creepy" and "ethereally beautiful", according to people who've listened to an audio clip posted on Twitter by NASA.The US space agency tweeted what it called a remixed sonification of the black hole at the center of a galaxy cluster known as Perseus, which lies about 240 million light-years away from Earth. The sound waves identified there nearly two decades ago were "extracted and made audible" for the first time this year, according to NASA.
NASA在社交媒体上发文称:“太空中没有声音的误解源于大多数空间是真空,无法让声波传播。”但天文学家发现,事实上,星系团存在大量气体,黑洞发出的压力波能在星团中引起涟漪。
据报道,这段音波来自美国宇航局的钱德拉X射线天文台。
The 34-second clip set social media ablaze, with many people gobsmacked that anything, let alone what sounds like an eerie, guttural moan, could escape a black hole.But the idea that there is no sound in space is actually a "popular misconception", the agency said. While most of space is a vacuum, with no medium for sound waves to travel through, a galaxy cluster "has copious amounts of gas that envelop the hundreds or even thousands of galaxies within it, providing a medium for the sound waves to travel," it explained.
天文学家表示,黑洞中的声音大约在中央C以下57个八度音阶,人耳无法听到。美国国家航空航天局通过音频技术提升波形频率,从而使人们能够听到黑洞的声音。
来源:华盛顿邮报、中国日报
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