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Time-lapse movies: The universe in motion The whole universe is an extremely dynamic place. Nothing is static over the time. Our observations reveal instead a quite steady environment: Stars have the same positions in the sky and do not change theyr luminosity, shape or size, as well as clusters, nebulas and galaxies. Actually the problem is our concept of dynamic, our time scale. The universe changes often over time scale much greater tha human life, that's the reason for this appatent immobility.
Luckily, whe don't need
to wait for thousand of years to see the universe evolving, we just need
few hours, or, at maximum, few years and then accelerate a bit the
passing of time. Time-lapse animations are small movies showing the evolution of a phenomena by accelerating the time interval. In this section there are some videos showing the movement of the universe and nature.
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