Looking up at the night sky, the stars all over the sky are always imaginative. However, do you know, the stars in the sky will fight. Curious? Let’s look down together!
1、 Asteroid impacts planet
A huge space star hit Jupiter, forming a Pacific sized “black eye” on the surface of Jupiter. According to the analysis of scientists, this is probably caused by an undiscovered comet collision, which suggests that many astronomers will find a similar impact in the future, which is enough to cause fatal damage to the earth and make mankind repeat the same mistake.
2、 Supernova explosion
Supernova explosion refers to the violent explosion of some stars at the end of evolution.
This kind of explosion is very bright. In this process, electromagnetic radiation can often illuminate the whole galaxy where it is located, and it can last for weeks and months and gradually fade out of sight.
When a star explodes, it will disperse most or almost all of the matter at the speed of one tenth of the speed of light, and send shock waves to the surrounding interstellar matter. This wave will result in an expanding shell of gas and dust, known as a supernova remnant.
3、 Thermonuclear stellar explosion
A star 150 times the size of the sun has evolved into a supernova in a distant galaxy. Many scientists believe that it is twice as likely to explode as a giant star and closer to the earth.
In addition, so far, supernovae have been observed to be more energetic and brightest. Previously, scientists have always believed that such super massive stars are likely to collapse into black holes, or decompose more matter, and eventually become super dense sub stars.
Now, they know this
The discovery that a super massive star can become a huge thermonuclear star and a supernova means that a similar star in the galaxy, ETA Carinae, will eventually encounter the same fate. Supernova explosions are very bright, and scientists say earlier observers can see the light emitted by supernovae.
4、 Gamma ray explosion
Gamma ray bursts (GRBs) are the most powerful explosive phenomena in the known universe. Theoretically, giant stars collapse when they run out of fuel, or are produced by the combination of two compact stars (black holes or neutron stars).
Gamma ray bursts are as short as thousandths of a second and as long as several hours, releasing a lot of energy. If compared with the sun, the energy it releases in a few minutes is equivalent to the sum of trillions of years of sunlight, and the single photon energy it emits is usually hundreds of thousands of times that of ordinary sunlight.
5、 Black holes devour stars
The researchers captured images of a giant black hole devouring a star, and they speculated that the star was wandering too close to the black hole and attracted by its strong gravity. The star shone brightly at the earth before it was completely engulfed, and the energy released was so great that it was observed by telescopes two and a half months later.
6、 Galactic collision
The Hubble Space Telescope photographed Galaxy collisions. Scientists believe that in two billion years, Andromeda will merge with the Milky way and devour the entire galaxy.
7、 Mysterious dark matter
Scientists believe that dark matter is the main component of the universe. When astronomers observe the collision of two super large galaxy groups, they can find the existence of dark matter. This observation, based on the Chandra X-ray Observatory and other telescopes, shows how Galaxy collisions separate dark matter from cosmic matter.