Telescope Trivia Part 2

Here again are some telescope trivia for you guys!

1. Hey, did you know that telescopes were not discovered up until the 1600's. And so, before this time -- our ancient sciencists and astronomers have to make astronomical observations with their eyes, unaided by any gadgets except measuring devices. Such devices are helpful when they measure the planet's position against the background of the Stars.

So, thanks to Galileo Galilei, astronomical observations and pursuits became much easier.

2. The Hubble Telescope is the most expensive, and one of the most important telescopes created by man.

Since its creation in 1990, the Hubble Telescope has been circling the the Earth. One of Hubble Telescope's importance is providing man with vivid optical images of the space, of the planets and stars, and the Earth itself.

The Hubble Telescope was created by astronomer Edwin Hubble, whose important contribution to astronomy is the Hubble Constant.

The Hubble Constant determines the relationship between the distance of a galaxy from the Earth and the speed at which the galaxy is moving away from the earth. This constant gives a description of the rate the universe is expanding.

So, thanks to Edwin Hubble, we all know now that the galaxies are moving and moving apart, and the universe is forever expanding.

4. The Hubble Telescope is the most powerful telescope because it is stationed outside of the Earth's atmosphere. But if we are going to talk about Earth-based telescopes, the most powerful has to be the Keck Telescope in Hawaii. The Keck Telescope collects light from a number of mirrors controlled by computers. One important use of the Keck telescope is the observation of asteriods, meteors and other astronomical objects with superior carity.