Whenever we flip a coin in the air, we know it's going to come back because of gravity. Gravity is the most mysterious force in the universe. Scientists have been trying to figure out where it comes from for years, but now researchers are working on a study that will change everything about our understanding of the eternity of the universe. They claim to have solved the true source of gravity.
Gravity effect on us every day is one of the four fundamental forces, with the quality of the object can create gravity, the other three is the electromagnetic force and the strong and weak nuclear force, the three kinds of force until recent centuries known to mankind, but affect the planets and stars such as the gravity of everything has been a subject of speculation for a long time, it can keep us on the earth's surface, And move the Earth around the sun.
The gravitational pull of the sun's orbit holds all of its constituent elements together so tightly that nuclear fusion produces heat and light, or in short, gravity gives life. Newton believed that gravity increased with the mass of objects or their proximity. If we add the numbers together, doubling the mass of an object doubles its pulling force, doubling the distance between two objects, and quadrupling the pulling force between them, these concepts are condensed into Newton's law of gravitation.
But Newton's laws aren't perfect. Astronomers in the 19th century discovered a tiny difference between Newton's laws and the laws of nature. When scientists saw that an ellipse formed by the orbit of Mercury was moving around the sun faster than predicted by Newton's theory, the problem was later solved by German-American physicist Albert Einstein in his general theory of relativity, published in 1915.39bet-kết quả bóng đá-kết quả xổ số miền bắc-kèo bóng đá -soi cầu bóng đá-đặt cược
Einstein proposed that the shape of space-time is what causes the gravity that we experience, that all objects with mass like the Earth actually bend the fabric of the universe, that's space-time, and the curvature is the gravity that we feel, and everything has to follow that curvature, even light rays are bent by supermassive objects, Einstein's field equations of General relativity A set of equations showing how matter and energy change over the course of a solar eclipse in 1919, when they accurately predicted changes in Mercury's orbit and the bending of stellar lines around the sun, the warped space-time proved the theory.
So does this mean that Einstein's theory of relativity proved Newton wrong? Newton's method was descriptive. He matched observations to a simple mathematical problem. His mathematics could not explain the gravity function, but it is still a very effective way of describing the behavior of ordinary objects. Einstein did was to improve our understanding of the origin of gravity, such as black holes, using Einstein's relativity theory in the vicinity of a black hole would be more accurate than Newton's law of universal gravitation, Newton's laws accurately describes how the object motion, but Einstein tensor field equation is more important, because astronomers have found the actual black hole in outer space, And even managed to snap a picture of the giant black hole at the center of our galaxy. Other telescopes have observed the effects of black holes around the universe.
Astronomers have tested Einstein's theory with the help of these black holes, and in a study published in the journal Scientific Astronomer, the gravity model outlined in Einstein's general theory of relativity is thought to collapse on its own deep inside these black holes, by studying Sagittarius A, the supermassive black hole at the center of the Milky Way. The study shows that even at the very edge of a black hole, gravity behaves exactly as Einstein predicted. However, the study only established the applicability of Einstein's relativistic model.
In 2018, scientists monitored star SO2 as it made its closest approach to Sagittarius A. The star is very close to Sagittarius and is moving at 2.7% of the speed of light. Astronomers used the Keck Observatory Gemini Observatory in Hawaii and the Subaru Telescope to track SO2's full orbit in 3D. The data were combined with measurements they took over the past 24 years. If Einstein was right, black holes would somehow warp space-time and extend the wavelength of light from S0 to 2.
In short, as the black hole's powerful gravity uses up its energy, the waves get longer, changing the color of the starlight from blue to red. The fact that stars are still emitting blue light supports Newton's theory of gravity, which ignores the curvature of space and time. If it changes tone, it leads to an entirely different concept of gravity. However, just as Einstein predicted that stars would glow red, the researchers analyzed gravitational redshift predictions in general relativity, which show that light is distorted by gravity.
The scientist's observations are consistent with Einstein's general theory of relativity; however, his theory has certainly shown vulnerability to its inability to fully explain the gravity inside a black hole, and at some point we need to move beyond Einstein's theory to a more comprehensive theory of gravity to explain what a black hole is. This would be a revolution in physics.