Quiz · Echoes of the Big Bang

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

How the Sun and its planets were formed Why dark matter no longer puzzles scientists The danger of stars exploding near Earth The history of the universe since the Big Bang

Question 2According to the passage, when were the lightest elements forged?

Hundreds of millions of years after the start During the first few minutes of the universe Only after the first galaxies appeared At the moment the first stars died

Question 3What is the afterglow of the Big Bang, as described in the passage?

A bright light still seen at the galaxy's edge Heat released when the first stars exploded A faint whisper of microwave radiation from every direction Radio signals coming from the nearest stars