What is an intergalactic star?
Intergalactic star is one that does not belong and is not in the galaxy. They are also known as Stellar Outcasts and others, the unofficial name are the stars of the tramp. Intergalactic stars were probably formed in the galaxy, but an event of a kind could drive out the stars and leave them on their own. The concept of an intergalactic star was hypothetical until 1997, when Hubble Telescope observed several in the area of the universe known as the Pango Cluster, a group of galaxies that look as if they were in the constellation of the Virgin.
Stellar Outcasts are obviously not so rare. The estimated number of intergalactic stars in the virgin cluster itself can be over one trillion. Despite the huge number of these stars, astronomers think that the night view of the planet orbiting an intergalactic star would not be very exciting. The star is not in the galaxy, so even if there may be several distant galaxies that would be visible, the inhabitants should not be crowded, crowded, the starry sky can see from the ground.The effect would be even worse if the planet had no moon.
As the stars have become intergalactic, it is not exactly known, but there may be several possible ways. One of them is that the stars were part of the galaxies collision that released the stars in the process of reunion. Another hypothetical process is a multistar system that is approaching a black hole, one of the stars in the system exceeding the horizon of the event and falling into the black hole and the others are somehow forgiven and eventually combining and creating an intermediate star.
The stars watched by Hubble Telescope were red giants. The first indication that intergalactic stars could actually exist when astronomers found planetary nebulae outside the galaxy in the virgin cluster. The planetary nebula is formed as part of the process that occurs when the star is close to the end of its lifetime, and if the planetary nebula was outside the galaxy, it meant thatEd with these galaxies were stars. The astronomers then compared the shots of Hubble Deep Field (HDF), a deep image of galaxies, with a picture taken by the relatively dark part of the virgin cluster. If there were intergalactic stars, astronomers thought they would find other but weaknesses of light, and what confirmed the existence of intergalactic stars.