Telescopes

Question 1

what can telescopes be used for?

Answer 1

analysing starlight, measuring distances between stars, how hot they are, their chemical make-up, take photographs, used for data

Question 2

what is a “parallax”?

Answer 2

displacement of an object because of a change in the observer’s point of view (specifically after 6 months).

Question 3

what can radio telescopes be used for?

Answer 3

Radio telescopes can be used to penetrate through clouds of gas and dust in a dark nebula. It is used by analysing radio signals (radio waves) to get a “picture” of what is going on.

Question 4

what other types of EM radiation is used?

Answer 4

x-rays, gamma rays, (both give info on black holes). microwave rays (info on beginnings of the universe), ultraviolet rays (spotting star explosions)

Question 5

what measurement can be made by analysing the amount of light in a star spectrum?

Answer 5

Surface temp