Assertion: radio telescope's antenna | /r/HasProperty | large
Facets:
value: very
type: DEGREE
value: infeasibly
type: MANNER
value: in order to arrive
type: PURPOSE
Source sentences:
text: Since astronomical radio sources such as planets, stars, nebulas and galaxies are very far away, the radio waves coming from them are extremely weak, so radio telescopes require very large antennas to collect enough radio energy to study them, and extremely sensitive receiving equipment.
text: Unlike the others, radio telescopes have large dish antennas attached to them, in order to be able to catch the radio waves.
text: Owing to the fact that astronomical objects are generally far away, radio telescopes need large antennas to collect and transmit radio waves.
text: However, in instances where these antennas are large, they are manufactured in such a way that they are able to maintain their shape and are able to utilize various focus points.
text: In order to successfully to do this, one has to divide radio wavelength by the size of the antenna and since radio telescopes generally observe long wavelengths, a radio telescope needs an antenna that is very large in order to arrive at a resolution comparable optical telescope.
text: A single dish antenna for these long wavelengths would have to be infeasibly large.