E1 Destiny Sand Castle. If the shape of the castle is to remain the same, for every grain of sand the wind takes away, another grain must be placed precisely in the same place. This probability is very low. The arrow of time can only go in one direction - disorder, chaos and decay. What if we could stop this direction? What if the universe doesn't go to ruin? There must be something missing - life
E1 Destiny
Sand sculpture castle. If the shape of the castle is to remain the same, for every grain of sand the wind takes away, another grain must be placed precisely in the same place. This probability is very low.
The arrow of time can only go in one direction - disorder, chaos and decay. What if we could stop this direction? What if the universe doesn't go to ruin? There must be something missing - life.
E2 Stardust
We, like everything in the universe, are made up of 92 elements. Different combinations of protons and neutrons form everything. The explosion of the nebula nebula brought the possibility of life, and when we die, the body changes back to the elements, back to the universe. Everything is in an endless cycle.
E3 Falling
Elliptical galaxies are in disordered motion, because the stars in them are in disorderly motion, and gravity drives other planets to corresponding disorderly motion. Spiral galaxies, like the Milky Way, are the opposite.
E4 Messenger
-The speed of light determines that what enters our eyes is the past.
- Light also has visible light and invisible light, such as infrared light, because the wavelength is longer, we can't see it. Part of the radio waves the radio receives may come from the Big Bang, another form of light.
- As space is stretched, the light is stretched too, the wavelength is stretched, the spectrum of galaxies is shifted to the red end of the spectrum, and distant galaxies appear red.
- The distance between galaxies is increasing, indicating that the universe is expanding.
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