A hyper-fast star has been discovered that travels at 540 km per second, it is in our galaxy at the moment and may have greater speed, because other hyper-fast stars have already been found and even faster, but this one in particular has a planet.
It was first detected indirectly in 2011 thanks to a fortuitous alignment that caught the attention of a team of scientists because they were reviewing archived data from a microlensing observatory. It turns out that that star was affected by gravitational microlensing.
Microlensing is produced due to the presence of a large mass that deforms the fabric of space-time and literally acts as a lens, enlarging what is in the background, that is, if a star, the light of this star is right where the microlensing that light is enlarged and then we can see the star that otherwise we would not be able to see because on top of that it is a fairly small star.
The light is expanded and everything is expanded, when I say everything, it is all types of radiation, this is an important detail for those who are looking for, for example, extraterrestrial life forms of technology or extraterrestrial technological civilizations because it would also amplify the signal of any radio or television signal and also with tremendous clarity, keep in mind that radio and television signals, although in science fiction films they are usually used as a way for extraterrestrials to locate the Earth, in practice they dissipate with distance and end up dissolving in the soup of radiation from the Cosmos, which makes it quite difficult to capture a radio signal, for example from the Earth, unless it is a very specific signal and launched in a very powerful way.
There are specific signals launched by astronomers, for example, recently to the North Pole or the famous signal from Arecibo, but except for those types of very specific signals it is very complicated, the normal radio signal I guarantee that not even in the next centauri, they could be capturing our radio and television programs, which in the end is good news, because seeing how television is currently, it is better not to watch it, because then they could have a terrible idea about us.
In this specific case, the light of the star was expanded and it was possible to capture this small star and with its planet, a hyper-fast star that has a planet is something that was doubted, because these hyper-fast stars acquire that enormous speed due to caroms, it is assumed that they were expelled from a system where other more massive stars acted and then they were launched into space due, like the three-body problem, the complication that a third, especially smaller one, can survive in an environment with two other much more massive bodies or They could also pass near a black hole and be launched at enormous speed to wander through space.
In this process of launching, it was assumed that the planets that were orbiting it would end up being torn off and perhaps launched in a different way or perhaps captured by that black hole, however, in this case it is confirmed that the hyper-fast star does not have its planet.
In this case it would be a super Neptune, that is, it would be a planet similar to our Neptune but larger and the star is smaller than the sun. This planet orbits its star at a distance similar to that found by Venus or the Earth from the sun, a little more than 100 million kilometers from its star. The current calculation is that the star and the planet move at about 540 km per second, but that is only its movement in two dimensions with the calculations we currently have, because if the star moves If it were moving towards or away from us, the actual speed may be even much higher.
The speed of that star, if it exceeds 600 km per second, would lead it to be able to leave the galaxy and end up sailing through the solitude of intergalactic space for tens of billions of years or more, because the smallest stars last much longer, red dwarfs, which are stars smaller than the sun that have 10% to 20% at most of the mass of the sun, can live 100,000 million years much longer than the sun, in fact the universe is ageless. enough that a red lullaby star would have died in it, none have died yet, they are all in their juvenile stage, the oldest ones are in their juvenile stage.
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