The video explains that sound cannot travel through the vacuum of space due to the lack of a medium for sound waves. However, electromagnetic waves can travel through space and are used by scientists to 'listen' to the universe. The video discusses how NASA's Voyager 1 and the Rosetta spacecraft have detected waves in space, which can be interpreted as sound. These findings help scientists understand the density of interstellar plasma and other phenomena. The video concludes with a call to support SciShow on Patreon.

Why can't sound waves travel through space?

• Because space is too vast.

• Because space is too cold.

• Because there is no medium to carry the vibrations.

• Because sound waves are too weak.

What makes electromagnetic waves different from sound waves in terms of travel?

• They are visible to the human eye.

• They require a medium to travel.

• They can travel through a vacuum.

• They are slower than sound waves.

How did the Voyager 1 probe contribute to our understanding of interstellar space?

• By capturing images of distant galaxies.

• By measuring the temperature of space.

• By recording electromagnetic waves in plasma.

• By detecting gravitational waves.

What was unique about the sounds detected by the Rosetta spacecraft from comet 67P?

• They were within the range of human hearing.

• They were caused by the comet's rotation.

• They required frequency adjustment to be heard.

• They were louder than expected.

What is the frequency range of human hearing?

• 10 to 10,000 Hertz

• 20 to 20,000 Hertz

• 40 to 40,000 Hertz

• 30 to 30,000 Hertz