How has the telescope changed over time?
As the 17th century progressed, other inventors, optical researchers, and scientists contributed to the telescope's evolution.
Johannes Kepler changed the shape of the glass within the instrument's assembly, then, in 1655, Christiaan Huygens made a larger, more powerful “Keplerian” telescope..
How have telescopes helped us?
Before the telescope we thought the universe was big, but we really had no idea how big.
Telescopes immediately showed us that there were vastly more stars out there than we had thought, but it took lots of work making bigger and better telescopes -- and learning how to use them..
How many astronomers are there in the world?
The worldwide com- munity of professional astronomers is only about 10,000; most are located in the US (with about 1,000 in the UK and 250 in Australia).
Under the heading of “astronomy” there are many fields (and sub-fields) of research..
Where is the best place to put a telescope?
PICKING A GOOD SPOT
When deciding to place your scope either "there" or "right there," you will want to pick an area that is out of the wind, but also away from trees and buildings..
Why do astronomers place telescopes in Earth's orbit What are the advantages for the different regions of the spectrum?
The main reason we put telescopes into space is to get around the Earth's atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying.
Our atmosphere acts like a protective blanket letting only some light through while blocking others..
- A telescope is a tool that astronomers use to see faraway objects.
Most telescopes, and all large telescopes, work by using curved mirrors to gather and focus light from the night sky.
The first telescopes focused light by using pieces of curved, clear glass, called lenses. - A telescope is a tool that astronomers use to see faraway objects.
Most telescopes, and all large telescopes, work by using curved mirrors to gather and focus light from the night sky.
The first telescopes focused light by using pieces of curved, clear glass, called lenses.
So why do we use mirrors today? - Most modern observatories use reflectors because their telescopes are so huge.
Refractors would not be practical.
