Monday, 26 August 2013

The effect shown in the gif is called gravitational lensing.


The effect shown in the gif is called gravitational lensing.

What is gravitational lensing?
Gravitational lensing is the effect seen when an object behind a massive object is in the line of sight with the earth.

For example:
Earth ————>Massive Object—————->Far away object

When we try looking at the far away object, the massive object bends space-time around it, causing the light rays from the far away object to travel in a curved path around into our line of sight.
As a result of this, we can often see the far away object magnified which helps astronomers understand the early universe. The gif shows a far away galaxy being gravitationally lensed by a closer black hole.

5 comments:

  1. Thank you Cori ! 
    There was a massive yellow/brown/white ring around the sun last week on the 22.08 
    Do happen to know which object was behind the sun back there? Or where could I look for such information?

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  2. These rings are caused by ice crystals within thin cirrus clouds, and there several different kinds of sun rings you can see depending on the weather conditions. U should check the sun halo effect.

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  3. This blows my mind to think about this.

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