Quiz · Exploring the Universe

Question 1What is the main idea of this listening passage?

How to set up a telescope correctly The danger of black holes to Earth Plans for travelling to other stars Observing the universe and what it reveals

Question 2Why is looking at distant galaxies like looking back in time?

Their light has travelled for millions of years Galaxies move away faster than light Telescopes record images from the past The galaxies have already disappeared

Question 3How do scientists measure distances to faraway stars?

They time signals sent to the stars They compare brightness of stars with known output They measure heat coming from the stars They follow the stars with telescopes