Episode 1: Destiny Heaven, Earth, and Destiny
Universe Beginning of
the Universe 13.7 Billion Years History
Time
1 Long Quiro "Thirteen Towers" on the northwest coast of Peru
One year on Earth: 365+1/4 days
about the universe The cycle of deep time is longer Neptune 's year
is 60,000 Earth days The surface is pulled back and forth, and the seawater is constantly rubbing against the seabed. The friction slows down the rotation of the earth, causing the earth's rotation to become slower and slower. Every day on the earth is getting longer, and every day is extended by 70 microseconds. The moon pulls the seawater on the earth, and the earth also attracts the moon. The tides cause the rise and fall of the seawater on the earth, and the gravitational changes of the seawater affect the earth's gravity, which in turn affects the moon's orbit. Three million years ago, there was no human being on the earth. Five billion years ago, there was no earth in the universe. 4 Star explosions emit gamma rays Hour by hour day by day, everything is inching closely to disorder, distruction and decay. Nothing can escape the relentless march of the time.
The sun is 4.6 billion years old, but it is fading, and it will burn out in five billion years. When the sun is dying, the outer layers will expand and become a red giant. It will become very large, occupying the entire ground plane of the earth, and life on earth will perish. The sun eventually becomes a white dwarf.
5 Namibia Skeleton Coast
Episode 2 : Star Suspicion The different elements
of human constituents
show different colors when they are burned. According to the light they emit, the constituent elements of the star can be judged.
Proxima Centauri is the closest star to Earth other than the sun.
The proton proton is the basis for the composition of various elements. The only difference between the various elements is the number of protons.
Most elements have only one proton. The most abundant element in the universe is hydrogen. Hydrogen is formed when an atom has a proton in its center. Laid the foundation for other kinds of atoms. When two protons meet, one of them becomes a neutron, another basic material that makes up the universe. Put more protons and neutrons together, and through the process of nuclear fusion, you can create all the elements in the universe.
Helium: There are 2 protons and 2 neutrons
that can create everything in the universe just by putting together hydrogen atoms.
Nuclear fusion is to bring 2 protons together, but it is not easy. Because they are all positively charged, they are generally repulsive and require a lot of energy to hold them together.
The source of energy for stars is nuclear fusion reactions.
When the hydrogen inside the star is exhausted, the star begins to die.
In the second stage of star collapse, helium nuclei begin to aggregate to produce two important elements necessary for life: carbon and oxygen.
The upheaval will continue, the time will be shorter, the temperature will be higher, and more elements will be produced.
Some heavy metals such as gold are produced when supernovae explode.
Betelgeuse in the Milky Way's Orion constellation is the star most likely to explode as a supernova. The last time the Milky Way had a supernova explosion was in 1604. In general, a supernova explosion occurs every 100 years.
A nebula (a lot of hydrogen and helium in the nebula) is created after the explosion. Nebulae are where stars are born. The gas and dust collapsed inward under their own weight, creating new stars. New stars and planets are created from the nebula.
The Orion Nebula is a spectacle.
Large amounts of elements are produced at the center of the star and thrown into space when the star falls.
From the meteorites that fell on the earth, the composition of the meteorites was analyzed, and many substances necessary for life were found on the meteorites. Let us guess that meteorites may also fall to other planets, bringing the possibility of life.
Episode 3: Falling
Gravity
Einstein: Space-Time Distortion Theory
Main idea: Everything in the universe moves in a straight line and travels in this twisted space-time of the universe. That is to say, the orbits of planets we see are actually just planets falling into space-time distorted by massive stars.
One way to understand gravity is that everything in the universe is falling, the earth is falling into the canyon created by the sun, and the solar system is falling into the space-time canyon created by the Milky Way.
General Relativity.
Black holes are extreme forms of gravity. Some black holes are the product of star demise.
Episode 4
Lightspeed
What we see is always the past. The sun we see is actually the sun eight minutes ago.
Different colors are actually
stretched waves of light with different wavelengths: CMB, called the cosmic microwave background radiation
Cambrian explosion of life. I
saw the following paragraph on the Internet, but I did not pay attention to the following paragraph in the video, but watch it It's pretty good.
The most astonishing wonder of the universe isn't a star or a planet or a galaxy.
It isn't a thing at all.
It's an instant in time.
And that time is now.
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