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.

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