Epsilon Indi Ab is the oldest and coldest exoplanet.



"Only a point of light is visible on the JWST/MIRI images. Nevertheless, the initial analysis suggests the presence of a gaseous planet that may have properties similar to Jupiter. Credit: T. Müller (MPIA/HdA)" (ScitechDaily, Webb’s Super-Jupiter Breakthrough: Oldest and Coldest Exoplanet Ever Imaged)

"Researchers using the JWST have captured a new image of Eps Ind Ab, a super-Jupiter with an orbital distance significantly greater than previously estimated. This discovery, highlighting a colder exoplanet than typically observed, prompts a reevaluation of its mass and orbit while also offering a new method for studying distant cold gas giants through direct imaging and spectral analysis." (ScitechDaily, Webb’s Super-Jupiter Breakthrough: Oldest and Coldest Exoplanet Ever Imaged)

The JWST found that the exoplanet Epsilon Indi Ab has a similar ability to Jupiter. The Epsilon Indi Ab is a so-called super Jupiter. The role of Jupiter in our solar system is dominating. The term favorable Jupiter means the planet, that has a large mass. 

And that planet stabilizes the solar system. In the young solar system, the favorable Jupiter collects asteroids and dust from around it. That favorable Jupiter will form the first Lagrange points in the Kepler radius between the star and the planet. The problem with habitable planets is that they are calculated being large-size, metal-rich rocky planets. So that requires a large favorable Jupiter. 

The thing that we often forget is. When we talk about Kepler's radius, is that the planet forms at the point, where the star's and the planet's gravity pull with the same force. Because, the planet is far lighter than the star, the point, where the planet forms is closer to the planet than the star. normally Kepler's radius means Kepler's orbit. Or, Kepler's third law. 

The planet forms between the favorable Jupiter and the gravity center. At that point, gravity affects the same way on both sides that anchors the asteroids in that point. Only if gravity pulls both directions with the same force that the planet can form. 

The thing about those super Jupiters is that they can also act as favorable Jupiter. Super Jupiter. With two Jupiter masses can turn to favorable Jupiter. If it orbits the Sun-type star twice as far as Jupiter. The star with a mass half of the sun requires super Jupiter. Whose mass is twice Jupiter's mass or the distance of the exoplanet must be half of the distance of Jupiter if its mass is about Jupiter's mass.  

If the mass of favorable Jupiter is half of Jupiter, that means the favorable Jupiter must be half of the distance to Jupiter. If favorable Jupiter is too light, it cannot stabilize the system. Or the planet forms too close or too distant from the sun. In the first case, the solar wind blows those particles away. And in the last case. It's possible. The massive rocky world pulls that planet against it. And that destroys both planets. 

If the distance of favorable Jupiter is too far, the planet is forming too far, and there cannot be lifeforms. If the giant planet is too close, it pulls all material from around the star into it. So only when the favorable Jupiter is in the right distance, can the planet between it and the star be in a habitable zone. 


https://scitechdaily.com/webbs-super-jupiter-breakthrough-oldest-and-coldest-exoplanet-ever-imaged/


https://en.wikipedia.org/wiki/Epsilon_Indi


https://en.wikipedia.org/wiki/Epsilon_Indi_Ab


https://en.wikipedia.org/wiki/Kepler%27s_laws_of_planetary_motion


https://en.wikipedia.org/wiki/Kepler_orbit

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