Assertion: radio telescope | /r/ObjectUse | used in radio astronomy
Facets:
Source sentences:
text: Radio telescopes are the main observing instrument used in radio astronomy, which studies the radio frequency portion of the electromagnetic spectrum emitted by astronomical objects, just as optical telescopes are the main observing instrument used in traditional optical astronomy which studies the light wave portion of the spectrum coming from astronomical objects.
text: Radio telescopes are directional radio antennas used for radio astronomy.