Gravitational Wave Background Discovered?
PBS Space Time

Gravitational Wave Background Discovered?

C1高级2026年11月13日23分钟
  • 单人讲述
  • 科学

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Uploaded 17-02-21 Check Out Overview on PBS Terra: https://youtu.be/Pgj95EntvW0 Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime It was pretty impressive when LIGO detected gravitational waves from colliding black holes. Well we’ve just taken that to the next level with a galaxy-spanning gravitational wave detector that may have detected a foundational elemen...

播放本集

打开播放器:完整文字稿,每个单词都可点击,附翻译和单词卡。

试一试:点任意单词

来自本集开头的真实句子,每个单词都标出了难度级别。

第 1 句,共 12 句 · 0:00

waves from colliding black holes.

点一个单词,用你的语言查看释义。

这些单词你认识吗?

本集中 8 个较难的单词。点一个查看释义,然后标记一下。

标记几个单词,我们会告诉你这一集是否适合你的水平。

这一集适合你吗?

C1

C1 · 高级

语速快,信息密集,习语多

A1 21%A2 43%B1 22%B2 13%C1 1%
  • 86% 的单词在 B1 或更简单的水平。
  • 每分钟 126 词:语速慢,清晰。
  • 整集共有 167 个较难的单词(B2 及以上)。

文字稿

本集开头部分。完整文字稿在播放器中。

0:00

It was pretty impressive when we built this giant machine that spotted gravitational waves from colliding black holes. Well, we've just taken it to the next level with a galaxy-spanning gravitational wave detector that may have detected a foundational element of space itself, the gravitational

0:15

wave background. When the laser interferometer gravitational wave observatory, LIGO, turned on in 2015, it quickly spotted exactly what it was built to detect. Vast ripples in the fabric of space-time produced by colliding black holes a billion light-years

0:34

away. Since then, LIGO and its partner Virgo have detected 50 similar signals from merging black holes and neutron stars across the universe. These sweep past the Earth every few days, causing space itself to oscillate.

以上是开头部分。 本集其余部分(22 分钟)在播放器中:每个单词都可点击,附翻译、生词收藏和单词卡。

在播放器中继续

由音频自动生成,可能存在错误。 音频版权归其发布者所有,并从其订阅源播放。版权所有者可申请删除 — 版权与删除政策