It turned out that the gatekeeper was actually a ring made out of gas and dust, a new study says.
To check this principle, Mojzsis and lead writer Ramon Brasser, a researcher on the Earth-Life Science Institute on the Tokyo Institute of Technology in Japan, created computer simulations that re-created the expansion of the previous solar system and the planets inside it. In one of these objects formed Mars, Earth, Venus and mercury.
Researchers from Japan and the U.S. say this disc would have had bands of excessive and low strain that break up off to create the 2 distinct areas.
"The most likely explanation for that compositional difference is that it emerged from an intrinsic structure of this disk of gas and dust", said Professor Stephen Mojzsis, a researcher in the Department of Geological Sciences at the University of Colorado, Boulder, and the Institute for Geological and Geochemical Research at the Hungarian Academy of Sciences.
Ultimately, scientists realized that our sun was once likely surrounded by a disk, much in the same way as other young star systems that have been observed.
The phenomenon is a bit like how the Rocky Mountains divide North America into east and west.
And as Mojzsis remarked, while these disks could've led to dust aggregating in "distinct groups", the Great Divide created by them wouldn't have been fully sealed and thus would allow some carbonaceous pebbles reach Earth and create "the seeds of life" there. That is because billions of years ago, our runt one solar blueprint used to be divided in two by a cosmic gatekeeper that refrained from affords in the internal and outer regions from mixing.
So what does our solar system's divide look like today?
But you can still detect its presence throughout the solar system. Move sunward from that line, and most planets and asteroids tend to carry relatively low abundances of organic molecules. On the other, distant side - past Jupiter and heading towards the outer solar system - they are carbon-rich.
This dichotomy "was really a surprise when it was first found", Mojzsis said.
In the Rocky mountains, "the Great Divide causes water to drain one way or another, ' Mojzsis said". Some outer solar system material may still have climbed across the divide.
He said that material is what would have been important to the evolution of Earth.
Many scientists assumed that Jupiter was chargeable for the upper carbon ranges discovered within the outer photo voltaic system, in accordance with Dr Mojzsis. 'And that offers you water. "It gives you organics".
The simulation proved that Jupiter could not have possibly grown so fast to keep out all the carbon-rich pebbles from entering the inner solar system. The second is located Neptune, Uranus, Saturn and Jupiter.
This led to their discovery of the "Great Barrier" likely formed alongside the rest of the solar system out of that early protoplanetary disc.
"One or multiple such - potentially mobile - long-lived pressure maxima nearly completely prevented pebbles from the Jovian region [from] reaching the terrestrial zone, maintaining a compositional partition between the two regions", the researchers wrote in the new study, which was published online today (Jan. 13) in the journal Nature Astronomy.
Instead, the two scientists proposed another theory: early on in the solar system's history, there could have existed a ring, or multiple rings of alternating bands of high and low pressure gas and dust circling the sun.
The rings round a star are the early levels within the creation of planetary methods - one thing that occurs round most stars, astronomers say.
Mud grains collide and stick collectively, rising in dimension, and finally forming rocky "planet embryos" which will later accumulate the fuel round them.
New research suggests those discs also left behind a barrier in the solar system marking a divide between planetary types.
The divide was probably brought on by bands of excessive and low strain inside the disc splitting materials into two distinct camps, one forming Jupiter and the outer planets, the opposite Earth and the internal planets.