Assertion: radio telescope | /r/Desires | large antennas
Facets:
value: very
type: DEGREE
value: to collect enough radio energy
type: PURPOSE
value: to collect extremely sensitive receiving equipment
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.