Final answer:
Radio telescopes can be electronically linked to create an interferometer, which provides higher resolution imagery equivalent to that of a larger telescope. The VLA in New Mexico is an example of an interferometer array that produces detailed radio images of the sky.
Step-by-step explanation:
Radio astronomy faces a resolution challenge due to the long wavelengths of radio waves. However, radio astronomers can link two or more radio telescopes electronically to simulate the resolution of a much larger telescope. This method is known as radio interferometry. Telescopes that are linked in such a manner create what is called an interferometer or, when combining multiple dishes, an interferometer array. The Very Large Array (VLA) near Socorro, New Mexico, is an example of an extensive radio interferometer in the United States. With its 27 radio telescopes, the VLA is capable of producing high-resolution images at radio wavelengths. Advances in technology now allow for long-baseline interferometry without the need for the dishes to be physically wired together, significantly improving the resolution beyond what even visible-light telescopes can achieve.