A Quote by Sir Martin Rees, Astronomer Royal of Great Britain



Telescopes are in some ways like time machines...
They reveal galaxies so far away that their light has taken billions of years to reach us. We in astronomy have an advantage in studying the universe, in that we can actually see the past. We owe our existence to stars, because they make the atoms of which we are formed. So if you are romantic you can say we are literally starstuff. If you're less romantic you can say we're the nuclear waste from the fuel that makes stars shine. We've made so many advances in our understanding. A few centuries ago, the pioneer navigators learnt the size and shape of our Earth, and the layout of the continents. We are now just learning the dimensions and ingredients of our entire cosmoc, and can at last make some sense of our cosmic habitat.



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Tuesday, September 4, 2012

Voyager - on the verge of exiting Solar System!

Hello fellow Astro-enthusiasts.. found this interesting enough to put it on my blog.

35 years ago tomorrow, Voyager 1 left our Earth and set out on a mission that very few people are aware of. Apart from the fact that Voyager 1 and 2 will be the only man made objects that will have reached the end of our solar system, there are some other interesting facts.
It is interesting to know the kind of equipment that Voyager carried on board in 1977. It just has 68Kb of computer memory!! An 8 track tape recorder.. (Say whaaat!!). Gold plated discs containing multilingual greetings, music and pictures, in a hope that an intelligent species may come across it and be able to decode.

Today Voyager 1 is 11 billion miles away and Voyager 2 is 9 billion miles from the Sun. It takes 17 hours for a radio signal from Voyager 1 to reach earth and 12 hours (or maybe 15 hrs) from Voyager 2.

The news that Voyager exited our Solar System will sure be something I will look out for and milestone to remember and cherish.

Source: yahoo news