Interactions in outer space: how the universe reveals itself

Narayanan, Anand (2016) Interactions in outer space: how the universe reveals itself. I Wonder (2). pp. 4-12.

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Outer space is a lonely place. Stars are separated from each other, for the most part, by sheer emptiness. To appreciate how far apart things are in the universe, consider this example. Imagine the Sun as the centre of an expanding sphere. This imaginary sphere will have to grow to a radius of 38,000,000,000,000 kilometers before it can make contact with its nearest star. And that can take no less than about 4 years, even if the sphere were to expand at the speed of light!

Item Type: Articles in APF Magazines
Uncontrolled Keywords: Universe, cosmic interactions, outer space
Subjects: Natural Sciences > Astronomy & allied sciences
Divisions: Azim Premji University > University publications > i Wonder
Depositing User: Mr. Sachin Tirlapur
Date Deposited: 19 Sep 2018 12:56
Last Modified: 19 Sep 2018 12:56
Publisher URL:

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