Ar Fa

history of astronomy

Astronomy - Iran

With all that we’ve achieved to this day in so many different realms in the universe, the oceans and even more than that, the cosmos are still mysterious to us. Let’s see how long Persians have had their eye in the sky trying to uncover the mysteries above.

The Expansion of the Universe

The accelerating expansion of the universe is the observation that the universe appears to be expanding at an increasing rate, so that the velocity at which a distant galaxy is receding from the observer is continuously increasing with time.

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