Our solar system works in one way, the planets revolve around the sun. But scientists have now discovered how Exoplanets can redefine the solar system. Two different stars TRAPPIST-1 and TOI-178 are pushing the boundaries of what a planetary system can actually look like. When we look at an individual planet we can’t tell clearly about how a planetary system works.
Scientists studied TRAPPIST-1, which hosts seven Earth-sized planets orbiting a small dim star about 40 light-years away. They also studied another system TOI-178, which has at least six planets. Three already known and three newly found — circling a bright, hot star roughly 200 light-years away.
The Great thing about these two systems is they have formed slowly over time. That’s why they form a resonance chain. It means that the planets are closely packed together. They are so closely packed that every time an outer planet completes an orbit around its star, some of its closer-in sibling planets complete multiple orbits.
Resonance chains are fragile, and if a planet bumps into another or breaks out of orbit it can be destructive. It must have taken TRAPPIST-1 and TOI-178 systems a lot of time to form a slow and controlled resonance chain.
An astrophysicist Leslie Rogers of the University of Chicago said that the closer a planet is to the star the higher the density is. While the outer planets are very fluffy.
Scientists are still studying the two systems and how bizarre and different they are from our own solar system. These systems may be challenging astronomer’s view of things.