The Mysterious "Space Roar"

What was the main goal of the ARCADE device launched by NASA?

• To find new planets in our solar system.

• To listen for faint radio signals and heat traces from very old stars and galaxies.

• To measure the temperature of Earth's atmosphere.

• To send messages to alien civilizations.

What surprising discovery did the ARCADE device make?

• A new type of star.

• A very loud and strong radio signal.

• Evidence of alien life.

• A large asteroid heading towards Earth.

Why can radio waves travel through space, but sound waves cannot?

• Radio waves are much faster than sound waves.

• Sound waves are too quiet to be heard in space.

• Radio waves are electromagnetic waves and don't need a medium, while sound waves are mechanical and do.

• Space is too cold for sound waves to travel.

What is the main problem the "Space Roar" creates for scientists studying the universe?

• It makes it difficult to hear radio signals from Earth.

• It blocks out light from distant galaxies.

• It makes it harder to detect faint signals from the earliest stars.

• It causes interference with satellite communications.