Physicists tell us that everything in the universe is in perpetual motion, from the small electrons outside the nucleus to the entire universe, which is in endless motion.
But the motion of the universe itself does not seem simple.
In the 1920s, Edwin. Hubble found that by measuring the spectral data of extragalactic galaxies and concluding that "the vast majority of galaxies in the universe are moving away from Earth", the previous model of the steady-state universe was broken and the size of the universe was no longer fixed.
Even Albert Einstein, because of Hubble's discovery, removed the cosmological constant from his theory of relativity, which keeps the universe stable, and went to the Mount Wilson Observatory to observe the expansion of the universe.
But common sense tells us physics, the expansion of the universe can never go down, because according to the big bang theory, the expansion of the universe's largest source of power is the power of the big bang, but it is obvious this force will decay because of the passage of time, the big bang, 13.82 billion years later, the observable universe diameter alone for up to 930 light-years, The expansion rate of the universe should be decaying or even going from expansion to collapse 39bet-kết quả bóng đá-kết quả xổ số miền bắc-kèo bóng đá -soi cầu bóng đá-đặt cược.
But the observations surprised everyone.
In the 1990 s, physicists Sol Pearl Matt, Brian Schmidt and Adam Riess, when observing la type ia supernovae discovered a startling fact: this is called the universe rangefinder supernova. speed and redshift value far away from the earth is not consistent with the more recent supernova, but showed a trend of accelerated away from the earth.
This tendency means that the universe is not expanding at a constant rate, and objects at different distances are moving away from the Earth at different speeds, leading the three physicists to conclude that our universe is not expanding steadily, but accelerating.
The discovery that the universe is expanding at an accelerating rate won the three physicists the Nobel Prize in Physics in 2011, but the expansion of the universe is still a work in progress.
A recent paper published in the Proceedings of the National Academy of Sciences suggests that dark energy, which accounts for 73 percent of the universe's mass energy and is responsible for accelerating the expansion of the universe, is not static. It also changes over time, affecting how fast the universe expands.
The Cosmic expansion model showed in the paper: dark energy in the universe at present stage caused by the expansion of the universe to accelerate soon stopped, because dark energy provided by the repulsive force is fast attenuation, immediately cannot drown gravity, thus let the expansion of the universe continues to accelerate, and the universe's expansion rate at least from millions of years ago has begun to slow.
According to the model, our universe will stop accelerating after 65 million years, returning to a constant expansion rate, and dark energy will be no longer a rival to gravity after 100 million years.
So in 100 million years, our universe will shift from accelerating to collapsing, all galaxies will be blue-shifted across the spectrum, and galaxies that are farther away from Earth will start moving closer to Earth, and just as the universe has been accelerating with dark energy, the universe in the future will be collapsing with gravity.
The farther away the galaxies are, the faster they will move closer to Earth, AND THE galaxies that grew out of contact with Earth 46.5 billion light years ago will gradually fall back and re-establish a causal relationship with Earth.
But collapse is not necessarily a good thing.
Because if the universe collapses indefinitely, galaxies will get closer and closer together, and galaxies will collide more frequently throughout the universe. Over time, galaxies in the universe will fuse into large galaxies, and these large galaxies will eventually collapse into one galaxy.
At the end of the day, the stars will be squeezed together by the collapse of the universe, and even all the atoms in the universe will be squeezed together, and all the matter in the entire universe will eventually return to the singularity state, and then there will be another big bang, exploding a new cosmic law, a new intelligent civilization in the universe.