GENERAL KNOWLEDGE

Detailed explanation-1: -Solution: Radio telescopes are better than optical telescopes because they can detect faint galaxies which no optical telescope can, they can work even in cloudy conditions and they can work during the day and night.

Detailed explanation-2: -Advantages of radio telescopes Radio telescopes can be used in the daytime as well as at night. Radio waves are unaffected by the dust particles in space. Light waves are scattered by these dust particles and so never make it to Earth for detection.

Detailed explanation-3: -Radio telescopes have to be much larger than optical telescopes because the wavelengths of radio waves are so much larger than the wavelengths of visible light. Radio wavelengths are between ≈ 3 km to ≈ 1 cm, while visible light wavelengths are between ≈ 4 x 10-7m (violet) and ≈ 7 x 10-7m (red).

Detailed explanation-4: -With a radio telescope, we can study the most abundant element in the Universe. Radio waves are not affected by absorption. Optical waves are absorbed by e.g. dust clouds that are floating between the stars (like a sort of interstellar fog ). Radio telescopes see straight through these dust clouds.

Detailed explanation-5: -less influence of air movement and weather conditions. do not require a protective dome, so the costs are lower. observation is possible 24 hours a day. allow observation through clouds of interstellar dust. More items