Beijing is on the 28th of November outside the world satellite to a satellite that has a certain planet outside the solar system, called an "expatriate". Since 2009, NASA Kepler and the Transit Explorer Satellite (TESS) miss have discovered about 4,000 explosives, but astronomers have only one outside-of-plane satellite. Describes and still does not know if it is a satellite.
The exponent Kepler-1625b and its potential satellites are considered to be comparable in size up to Neptune. The researchers have said that this potential satellite and other so-called foreign satellites can have their own satellites.
In October 2018, David Kipping, an astronomer at Columbia University, and his diploma, Alex Teachey, was first reported in & # 39; the Science Advances magazine. A potential extra-terrestrial satellite.
Using NASA Hubble Space Telescope, analyzed the two researchers observations as exponent Kepler-1625b (Kepler-1625b) flew over a star. This is a planet such as Big to Jupiter, something of the light curls as it passes through the star. By analyzing the starry light curve, the characteristics of & # 39; a plane was determined.
This method of assessment is called the transit (ooklusing) method. Astronomers have used this method to discover thousands of explosives. The researchers, however, found two surprises, while the Kepler-1625b process evaluated the star. First, the flywheel over the star for 1.25 hours before or expected, indicating that there is something gravitational. Secondly, after the planet has completely gone through the planet, a whole picture appears in the light curve, which offers a satellite behind Kepler-1625b.
David Kiping said, "We have as many as possible as possible other capabilities such as detector errors, other planet's activities, or other star activities, but we can not find any other hypothesis that our hands can explain. that. "
This potential external satellite is like the same size as Neptune, or one third Kepler-1625b. The size of a characteristic satellite is usually much smaller than the planet that is the orbit, so this capacity is very great. Both the current planetary satellite model is busy, then satellite should be very rare when it exits.
It is believed that the quality of Kepler-1625b is just about Jupiter, and the quality of the potential satellite can only be 1.5%. This mass ratio is comparable to the earth and the moon. In the Earth and Moon system the moon is formed by formulas of & # 39; the dirt from a rocky planetary battle. However, astronomers see Kepler 1625b and their potential satellites belong to a gas-rich planet and are not composed of stones so that this extra-terrestrial satellite could form by different processes.
"We can not take up now opening the campaign festival," said Alex Titcher. "But everything looks exciting, attractive and convinced."
Looking for life on an off-camera satellite?
Some scientists say that foreign satellites can be a "very viable" world, which means they are good places to live. This is because these satellites are not limited to using light energy in the system, but can save their energy from other places, such as:
Reflected light. Illuminated light or thermal stretching of planetary planes can provide long-term stable temperatures and can promote evolution and reproduction of life.
Radioactive element. Radioactive elements such as uranium and thorium can also be deep in rock formations of foreign satellites of & nbsp; the comparable egroup, and in & # 39; At the time, these elements remove longer and volunteers on the surface of the satellite.
Tidal force. The gravitational exit of a large expansion, such as the size of Jupiter or Saturn, can influence extraordinary satellites, making tidal forces, similar to the total changes caused by the earth gravitational to the earth. When the surface of the foreign satellite that is made of stones is signed by the gravitational exit of # The exoplanets, the heat can reach the surface of the satellite.
There are 175 satellites in the solar system that we are. Many of these satellites have these characteristics, and two are also great candidates for foreign affairs: Jupiter Satelite Europe (Meowe) and Saturn's satellite (Luke).
Both satellites have a sensitive surface with decorated strips made by the gravitational forces of planet, at temperatures that are not high 128 degrees Celsius. Yet, there are only a few kilometers below their surface, a great plain ocean with floating water, the total amount of water in the earth is. Where flat water is present, life can be.
Where are the other outdoor band satellites?
Some astronomers consider that there are many sensitive satellites with underground oceans in Milky Way, which can be 100 to 1000 times greater than terrestrial planets, but it is very difficult to find.
The older star Kepler-1625b is as 8,000 light-years of Earth, a distance that it's a small place of & # 39; the earth makes, but with unwanted techniques of techniques scientists can look at the weakness of the planet when it comes to. . For the Kepler-1625b this satellite is relatively easy to count due to its large size. However, other satellite platforms that are comparable to large to Europe, that are equivalent to a fourth of the earth, it is not as easy as the light of the left-hand side To read them, they will keep shining when they fit the star. Under current technical conditions, these processes are too small to identify clearly. Therefore, we need a couple more patience to find more foreign satellites.