Earth's parent celestial system is the solar system, which is 2 light-years across, and the solar system's parent celestial system is the Milky Way, which is 180,000 light-years across.
However, as a owns hundreds of billions of stars spiral galaxy, the Milky Way's structure is simple. In addition to being dust lanes to be directly observed outside the black hole at the center of the Milky Way galaxy, astronomers have also found that the perpendicular to the silver plate "the Milky Way Fermi bubble" of material composition does not seem to come from the galactic center.
Fermi bubbles are giant bubbles of plasma produced by supermassive black hole jets at the center of a galaxy. You can think of them as two balloons anchored above and below a silver disk, with the inflated end at the center of the Milky Way.
In previous inherent cognitive, due to the black hole at the center of the Milky Way galaxy will be perpendicular to the jet from a black hole accretion disks, plus the number of black hole area at the center of the Milky Way galaxy is the Milky Way most, so astronomers generally believed that the Fermi bubbles at each end of the Milky Way is a black hole at the center of the Milky Way galaxy out, Fermi bubbles also must come from the material in the area at the center of the Milky Way galaxy 39bet-kết quả bóng đá-kết quả xổ số miền bắc-kèo bóng đá -soi cầu bóng đá-đặt cược.
But the material in the two Fermi bubbles, tens of thousands of light-years across, was not actually ejected from the Milky Way's central black hole, because astronomers measuring the metal content of the bubbles did not match that of the Milky Way's center.
That means there must be some unknown source of matter around the Milky Way, either dark matter or other parts of the silver halo that we haven't detected yet, but astronomers actually prefer supernovae to the elusive dark matter that hasn't been directly detected yet.
A supernova is the last act of a massive star that is too massive to collapse into a black hole. It is the most violent release of energy in the last few days of their life. In a single moment, a supernova releases as much energy as the stars have released in the last few billion years.
The most important thing is
Because supernova explosions belong to old stars, stars and internal have a lot of old stars due to fusion of heavy elements, so the supernova explosion in addition to release energy, to the space around the spread of heavy elements, metal elements, these metal elements may be regrouped into planets like earth, or it could drift through space forever.
Based on the supernova model, astronomers think that if there are a lot of globular clusters in the central region of the Milky Way, and the clusters are filled with old stars, the central region of the Milky Way is perfectly capable of several large supernova explosions, each of which produces a cloud of heavy elements and dust that expands outward.
With a Fermi bubble only tens of thousands of light-years across, the heavy element dust cloud formed by several supernovae would have ballooning to its current level in just a few million years, a fraction of a second for a galaxy that is 13.6 billion years old and almost the same age as the universe.
So these two ears, on either side of the Milky Way, probably came from supernovae in the galactic center. Jets from the galactic black hole may also have contributed, but the distribution of heavy elements inside the Fermi bubble has proved that the black hole at the center of the galaxy is not the main cause of the Fermi bubble, the supernova is.
As a galaxy that is 13.6 billion years old
The Milky Way still holds many secrets for astronomers, such as whether it is an original galaxy and whether it hasn't changed much since it was born 13.6 billion years ago.
The problem there is no answer, but many scientists are convinced that: today the integration and collision of the Milky Way is likely to be with other galaxies, like right now of the Milky Way after 3.75 billion will mix with the Andromeda galaxy collisions, in dense material distribution in the early universe, the original less sure didn't also the Milky Way and other galaxies collide.
It is in collision fusion, the Milky Way galaxy has a current diameter of 180,000 light years and hundreds of billions of stars "home", the solar system and the Earth and the humans on Earth have a chance to be born in the universe.