A solar system diagram from the past that helps explain how the sun formed and evolved.
The sun’s solar system was born out of a cosmic collision between two galaxies about 200 million years ago.
A solar system has a core of dust and gas, and its most prominent features are the rings of the sun, which form a circular disk around it.
These rings form the outermost part of the solar system.
The rings also form the innermost part.
There are three types of rings: the spiral, the elliptical, and the regular.
The spiral ring is the most common.
A spiral ring can form when the sun is a very close object.
Its rotation around the sun’s centre causes it to be a bit elliptical.
When it reaches the outer edge of the ring, its rotation slows down.
It becomes more and more regular.
An elliptical ring forms when the rings around the core are close to the edge of a disk, which causes it not to rotate as quickly.
Because it has fewer rings, an elliptical sun would not have a disk.
This diagram shows how the core of the earth is the ring that forms the outer portion of the disk of the inner sun.
“There is no other way to describe the sun,” said geophysicist John Houghton, who was not involved in the research.
But a closer look at the core shows it is very similar to the rings that formed when the outer rings formed around the center of the galaxy, he said.
Solar system formation is difficult because the sun was too close to form the disk, he added.
Houghton and his team also analyzed how the outer solar system formed.
They found that the inner ring had to be created by a collision of two galaxies.
That collision was so large that it was the only one that was close enough to the sun to create the outer ring.
It is believed that the collision happened about 2.5 billion years ago, but there is no evidence that it happened during the period when the universe was just 1.7 billion years old, said Houghtons co-author Robert Langer, of Harvard University.
In their paper, the team describes how the disk formed and how it was shaped.
It shows that the disk had to stretch from the sun and eventually wrap around the galaxy.
By the time it wrapped around the universe, it was too big for the sun.
So it started to collapse.
Then, the sun began to spiral outwards, the astronomers say.
To understand the solar disk, astronomers need to know about the shape of the galactic disk, and how the inner and outer rings form.
As a result, astronomers can study the evolution of the universe in a very detailed way, said Langer.
Its the most comprehensive view of the origins of the cosmos that is available, he noted.
Astronomers can also measure the density of the material in the outer and inner rings.
Some scientists think that the material that formed the outer parts of the rings, which are thought to be formed from collisions between galaxies, might be heavier than the outer material.
If that is the case, the inner rings might be the densest, Langer said.
“But the inner parts of rings are the denser than the solar surface, so if it’s not the case we can’t really understand how the solar mass works,” he said in an email.
One possibility is that the outer part of rings is much denser and the inner part is much lighter.
The outer parts could then be much larger than the inner ones.
Another possibility is the inner solar system is a supernova remnant, said geochemist John Czarniak, of the University of Arizona.
He thinks that a supernovae remnant is the result of a collision between an expanding black hole and a companion star.
The merger could have caused a mass ejection from the central star.
After the merger, the black hole went supernova and exploded.
The debris left the star in a region of space where there was a large amount of hydrogen gas.
Czarnak thinks the hydrogen gas has a large number of collisions with the outer outer rings, making it possible that the core was formed from the collision.
More research is needed to understand the origin of the outer stars and the outer disks, he and his colleagues wrote.
Explore further: NASA’s Dawn spacecraft is making its final plunge into deep space