N A S A

This is the latest information letting you know,Milky way . 

Circular disc containing large number of stars.

sun is at a distance of about 27,000 light year from the center.

Thickness of the disc at the center - 5000 light years

thickness of the disc at sun - 1000 light year.

It contains about 150 billion stars.

star moves at a speed of 250 km/s.

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