文字稿

近日，天文學家發(fā)現(xiàn)了迄今為止已知最遙遠的“超大”黑洞。這個大量吞噬其周圍物質的黑洞離地球的距離為130億光年。請聽以下的報道。

Scientists used telescopes in Chile and Hawaii and an orbiting NASA probe to detect a black hole 13 billion light years away from Earth at the centre of a huge luminous object known as a quasar.

Researchers from the Carnegie Institution for Science say light detected from the quasar dates back to only 690 million years after the Big Bang when the Universe was emerging from a period known as the Dark Ages.

Writing in the journal Nature, they say the age and sheer size of the black hole – about 800 million times the mass of our Sun – challenges current notions about the formation of these black holes and the Universe itself.

詞匯表

orbiting 在軌道上運行的…
probe 探測器
light years 光年
luminous 發(fā)亮的
quasar 類星體
the Big Bang 創(chuàng)世大爆炸
the Universe 宇宙
the Dark Ages 黑暗時代
sheer size 龐大的體積
notions 觀念，看法
formation 形成方式，結構

測驗

請聽報道并回答下列問題。

1. The telescopes from how many countries were used to find this new black hole?

2. What was it that scientists saw that help them date this new black hole?

3. What measurement is used to show the distance of something that is very very far away?

4. True or false? The black hole is similar in size to the Sun.

答案

1. The telescopes from how many countries were used to find this new black hole?
Scientists used telescopes in Chile and Hawaii (USA).

2. What was it that scientists saw that help them date this new black hole?
They detected light from the quasar dates back to only 690 million years after the Big Bang.

3. What measurement is used to show the distance of something that is very very far away?
Light years. This black hole 13 billion light years away from Earth.

4. True or false? The black hole is similar in size to the Sun.
False. This black hole is about 800 million times the mass of our Sun.