Illustration of a radio telescope in the night
Numéro d’image : 11880357
| Radio telescope. Illustration of a radio telescope at night with its dish pointed towards the stars. The telescope's dish reflects incoming radio waves and concentrates them at a single point. A receiver (the black disk) at this position collects the signals and passes them to instruments for analysis. Radio telescopes need a large dish in order to focus the radio waves which have a wavelength of between 1 millimetre and more than 1 kilometre. Radio astronomy is useful because radio waves,unlike light,are not absorbed by the clouds of gas and dust which lie between stars. Astronomical radio sources include quasars,background radiation and galactic cores | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Ducros, David |
| Taille de l’image : | 3649 px × 4890 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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