Telescopes are such optical instruments which make distant objects appear to be magnified . Actually telescopes have arranged lenses and spherical mirrors which enable us to see distant objects easily.


•Refracting Telescopes.

•Reflecting Telescopes.

The first telescope invented was a refracting telescope invented somewhere in Netherlands at the beginning of the 17th century . These telescopes use lenses and are based on the principle of Refraction . These first telescopes were used for both astronomical and terrestrial purposes.

The Reflecting Telescopes use mirrors to gather and focus light . These are the widely used telescopes now , invented within a few decades of the first refractive telescope. In fact it was Isaac Newton who invented the first mirror telescope in 1668. The design built by him is known as The Newtonian Reflector.


The term Telescope was coined in 1611 by the Greek mathematician Giovanni Demisiani for one of the Galileo Galilei’s instruments presented at a banquet at the Accademia dei Lincei. In Starry Messenger (An astronomical pamphlet by Galileo) Galileo had used the term Perspicilium.


Earliest existing record of a telescope was a 1608 patent submitted to the government in Netherlands by a spectacle maker Hans Lippershey for a refracting telescope. Galileo heard about it and built his own version in 1609 and observed farthest planet as Jupiter. He also proved the theory of Copernicus , according to which Planets revolve around the Sun.


The atmosphere of our planet hindered astronomical observations as air refracts the images of heavenly bodies a number of times which makes the image less clear. To avoid this, an idea of space telescope was proposed in 1948. Later on 24 April 1990 The Hubble Space Telescope was launched succesfully, which was the first Space Telescope and disclosed hundreds of secrets of the Universe. Now several Space Telescopes have been invented, but Hubble is the most famous of them.


• Copernicus was the first person to propose that Earth revolves around the Sun.

• Andromeda is the nearest galaxy to The Milky Way lying at a distance of 2.357 million light years.

• Ganymede, the moon of Jupiter is the largest moon of out solar system with a diameter of 5268 km.

• Jupiter is the largest planet of our solar system. It can fit 1300 Earths inside it.


9 thoughts on “TELESCOPES.

  1. Think the the box and be unique throughout to produce the most originating from a membership service.
    Remember this, big-name bloggers — like every other blogger — are always grateful for
    solid, informative content.


  2. Nice post

    Liked by 1 person

  3. Hi there! Woulld you mind if I share your blog withh my zynga group?
    There’s a lot of people that I think would really appreciat your content.
    Please let me know. Thaznk you


  4. It’s going to be end of mine day, however before finish I am
    reading this fantastic post to increase my knowledge.

    Liked by 1 person

  5. Chances are that would like to people remain on your website
    for a short time. The Internet is searched by millions of users just
    a day. First and foremost Do not place ‘image only’ or banner ads on your internet pages.


  6. This is one traffic-generating technique you shouldn’t miss.
    It will improve your online business greatly, save time and does not
    cost that you a small associated with money! Strategic Online marketing has many forms.–


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Create your website at
Get started
%d bloggers like this:
search previous next tag category expand menu location phone mail time cart zoom edit close