Question

astronomers often use radio telescopes to study space. why are radio waves especially useful for astronomical observations?

they carry the most energy of all em waves.

they can pass through earths atmosphere and collect data from very distant objects.

they sterilize the telescope lenses.

they are visible to the human eye.

Explanation:

• Radio waves have long wavelengths. This property allows them to pass through Earth's atmosphere without significant absorption or scattering.
• They can travel vast distances in space and reach Earth from very distant celestial objects, enabling astronomers to collect data about those objects.
• Gamma rays (not radio waves) carry the most energy among EM waves.
• Radio waves do not sterilize telescope lenses.
• Radio waves are not visible to the human eye (visible light is what we can see).

Answer:

They can pass through Earth's atmosphere and collect data from very distant objects.