The Webb Space Telescope, a $10 billion telescope that is currently 1.6 million kilometers from Earth, has been tapping away since it finished commissioning.
From the initial infrared test images, to the Weber Deep field and colored nebulae, to the vastly different colors of Jupiter, the quality of the images returned by Weber was far better than astronomers had expected, and the image distortion that occurred with Hubble was never seen with Weber 39bet-xì dách-phỏm miền bắc-tiến lên miền bắc-xóc đĩa-game bắn cá.
New images from the Webb Telescope show a near-perfect Einstein ring 12 billion light years from Earth, giving Einstein's theory of general relativity yet another indication on a cosmic scale that our universe can indeed be bent.
Before the end of the 19th century, the physics of human civilization was still in the age of Newton. At that time, the scientific community had a very simple understanding of gravity, only knowing that it was "universal gravity", but did not know exactly how gravity was born and what its specific manifestation in the universe was. Therefore, Einstein came into being.
After using special relativity to solve the problem of the speed of light, Einstein put forward his own concept of gravity, which was later general relativity, to solve the problem of the close motion of Mercury, which could not be solved by astronomy at that time.
In general relativity, gravity is no longer an ethereal, unknown force, but a "geometric fall caused by the distortion of space-time by objects of mass," meaning that all objects of mass are attracted by gravity, but the mass is too small compared to the stars and gravity is too weak to be felt.
In the solar system, the sun accounts for 99.86 percent of the total mass of the solar system, so gravity is the strongest, and all solar system bodies, including the Earth, orbit the sun.
With the gravity of a single star so strong, what does the gravity of a galaxy look like in the universe?
Einstein thought, due to the mass of the massive, its gravity would badly distort spacetime around the galaxy, and distort the light path, let the galaxy of light from galaxies behind the other in the distorted in the galaxy, and become a circular ring or arc structure, also known as gravitational lensing and Einstein ring.
If the foreground galaxy is massive enough and distorts space-time enough, it essentially creates a magnifying glass in the universe, so that light from a faint galaxy in the rear is amplified by the gravitational lensing effect of the foreground galaxy, turning it from invisible to visible.
When the foreground galaxy completely obscures the rear galaxy, and the covered area becomes perfectly circular, the light from the rear galaxy refracts away from the foreground galaxy and becomes circular as well, a phenomenon known as a low-probability version of gravitational lensing: an Einstein ring.
The photons that coalesce around the ring, 12 billion light years away, are actually from much farther out in the universe, but they are separated by a large galaxy, forming an Einstein ring that would not be visible if viewed from any other direction.
While gravitational lensing and Einstein's Ring have yet to be used in any practical way, astronomers think that in the future we might be able to use gravitational lensing to make natural telescopes.
In other words, that is, in the universe looking for several quality rank sites with appropriate galaxies, then near the earth looking for the right Angle placed inside the solar system or telescope ACTS as the eyepiece, special arrangement with billions of billions of light-years away galaxies as optical system, use them to distort spacetime caused by gravitational lensing to fixed-point observation target, as long as the distance is long enough gravity is strong enough, You can even see exoplanets in direct detail.
If a particular array of galaxies is too difficult to find, astronomers can use Earth's gravitational lenses as an optical system to create a super telescope the size of Earth.