A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century, by using glass lenses. They found use in both terrestrial applications and astronomy.

Within a few decades, the reflecting telescope was invented, which used mirrors to collect and focus the light. In the 20th century, many new types of telescopes were invented, including radio telescopes in the 1930s and infrared telescopes in the 1960s. The word "telescope" now refers to a wide range of instruments capable of detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors.

The word "telescope" (from the Ancient Greek , "tele" "far" and , "skopein" "to look or see"; , "teleskopos" "far-seeing") was coined in 1611 by the Greek mathematician Giovanni Demisiani for one of Galileo Galilei's instruments presented at a banquet at the Accademia dei Lincei. In the "Starry Messenger", Galileo had used the term "perspicillum".

The earliest existing record of a telescope was a 1608 patent submitted to the government in the Netherlands by Middelburg spectacle maker Hans Lippershey for a refracting telescope. The actual inventor is unknown but word of it spread through Europe. Galileo heard about it and, in 1609, built his own version, and made his telescopic observations of celestial objects.

Based on the article and the following list of answers, write a list of questions.

1. at the beginning of the 17th century,
2. 1608
3. The actual inventor is unknown
4. Hans Lippershey
5. Galileo
6. no
7. in both terrestrial applications and astronomy
8. the Ancient Greek
9. "tele" "far" and , "skopein" "to look or see"; , "teleskopos" "far-seeing"
10. Giovanni Demisiani
11. 1611
12. as a wide range of instruments capable of detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors.
13. the Netherlands
14. glass lenses
15. mirrors
16. to collect and focus the light
17. no
18. radio telescopes
19. infrared
20. at a banquet

Numbered questions:
1. When was it invented?
2. What year?
3. By whom?
4. Who asked for government recognition?
5. Who also made one?
6. Are they only used for looking at stars?
7. How are they used?
8. Where does the name come from?
9. What words?
10. Who first called it that?
11. When?
12. How is it used today?
13. Where was it first made?
14. What were used inside them?
15. What were later added?
16. Why?
17. Is this the only type available?
18. What kind came to be in the 1930s?
19. What kind came later?
20. Where was the term first used?