Hidden in plain view: Scientists discover 19 interstellar asteroids between Jupiter and Neptune that have been orbiting for more than 4.5 billion years around the Sun
- The 19 asteroids were found around the sun between Jupiter and Neptune
- They joined the solar system about 4.5 billion years ago and are never gone
- As the universe expanded and the sun was born, its gravity sucked her in
- They were ripped from their other galaxies and joined the solar system in its forming stages
Nineteen asteroids that previously belonged to a distant galaxy have been found around the Sun between Jupiter and Neptune.
They have been circling the sun for more than 4.5 billion years, since the very beginning of the solar system.
Astronomers believe that the rocks of space were ripped from their original location when the universe expanded and the sun grew rapidly, creating its own gravity.
The enormous power of the rising star sucked the rocks into the forming solar system and they have remained here ever since, astronomers believe.
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Nineteen asteroids that once belonged to a galaxy have been found around the Sun between Jupiter and Neptune. They have been around the sun for more than 4.5 billion years, since the very beginning of the solar system (file photo)
The findings come more than two years after astronomers saw the first interstellar visitor, the asteroid known as & # 39; Oumuamua.
The asteroids belong to a group of objects called Centaurs.
Fathi Namouni, of Observatoire de la Cote d & # 39; Azur in France and lead author of & # 39; the study, said: & # 39; The proximity of stars meant that they felt each other's gravity much stronger in those early days than they do today.
& # 39; This allows asteroids to be drawn from one star system to another. & # 39;
Dr Namouni and co-author Maria Helena Morais, from the Universidade Estadual Paulista in Brazil, ran computer simulations dating back billions of years.
They revealed that the asteroids were orbiting the sun on a plane perpendicular to planetary motion at that time.
At the moment, matter was scattered about the infantile sun and gravity was turning the detritus into rocky planets, which would eventually take the form of Mercury, Venus, Earth and Mars.
The expanding universe and rising sun attracted the interstellar visitors to the forming solar system and they have remained here ever since. The findings come more than two years after astronomers saw the first interstellar visitor, the asteroid known as & # 39; Oumuamua (pictured)
However, these interstellar asteroids were far enough away from the Sun that it survived this disc of debris and thus survived the tumultuous early stages of the solar system.
Dr Morais said: & # 39; The discovery of a huge population of asteroids of interstellar origin is an important step in understanding & # 39; e physical and chemical similarities and differences between Solar System born and interstellar asteroids.
& # 39; This population will give us clues about the cluster of & # 39; an early birth of "Sun", how interstellar asteroid capture occurred, and the role that interstellar matter played in the chemical enrichment of the solar system and shaping its evolution. ;
The origin of Centaurs has been a mystery to astronomers since the first member of the group, named Chiron, was recognized in 1977.
Some believe they may have spent some time in the Kuiper Belt, an outer constellation disk in the outer solar system, before going inside.
The new work is published in the journal Monthly Notices of the Royal Astronomical Society.
WHAT ARE THE DIFFERENT TYPES OF SPACE ROCKS?
An asteroid is a large rock of rock left over from collisions like the early solar system. Most are located between Mars and Jupiter in the Main Belt.
IN comet is a rock covered with ice, methane and other compounds. Their orbits take them much further out of the solar system.
IN meteor is what astronomers call a flash of light in the atmosphere when debris burns.
This waste itself is known as a meteoroid. Most are so small that they evaporate in the atmosphere.
If any of this meteoroid makes it to Earth, it's called a meteorite.
Meteors, meteorids and meteorites usually originate from asteroids and comets.
For example, when Earth passes through the tail of a comet, much of the debris burns into the atmosphere, forming a meteor shower.
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