The key answer of exercise 1
The key to exercise solutions in chapter 3 - Culture and competences for the textbook Performer B1, Vol. 2 with authors Marina Spiazzi, Marina Tavella e Margaret Layton from Zanichelli
Question
Look at the picture of Arecibo Observatory, Puerto Rico, which is one of the world's largest radio telescopes. What is a radio telescope? What is it used for?
Answer
- A radio telescope is an astronomical instrument that detects and collects radio waves from celestial objects, focusing on longer wavelengths. It uses a large parabolic dish or an array to collect radio waves and a receiver to convert them into electrical signals.
- Radio telescopes are used to study celestial objects, map cosmic structures, investigate active galactic nuclei, explore pulsars, detect hydrogen gas, search for extraterrestrial life, study cosmic microwave background, and monitor transient phenomena like gamma-ray bursts and supernovae. They play a crucial role in advancing our understanding of the universe, capturing emissions not observable with optical telescopes.
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