Spectroscopy can be used to explore space primarily by determining the elements that make up the surface of astronomical bodies. By analyzing the light emitted, absorbed, or scattered by an object in space, scientists can identify the wavelengths of light associated with different elements and compounds. This information allows researchers to infer the composition, temperature, density, and movement of celestial bodies, including planets, stars, and galaxies.
To summarize, the correct statement related to the use of spectroscopy in space exploration is:
They can determine the elements that make up the surface of astronomical bodies.