Bullying Jupiter-like planets may push 'alien Earths' away from life-friendly orbits

[Admin]

Planets like Earth shouldn't get too close to their bigger, bullying neighbors. Jupiter-size worlds can wreck life-friendly conditions on their smaller neighbors.

Bullying Jupiter-like planets may push 'alien Earths' away from life-friendly orbits : Read more

 

[rod]

Some interesting info and points made in this space.com report. I read this article too at https://phys.org/news/2023-10-giant-planets-deadly-pall-life.html

"Kane said. "This paper is really a warning, when we find planets in the habitable zone, not to assume they are automatically capable of hosting life." Ultimately, the pair of papers shows how uncommon it is to find the right set of circumstances to host life elsewhere in the universe. "Our work gives us more reasons to be very grateful for the particular planetary configuration we have in our solar system," Kane said."

Ref - Surrounded by Giants: Habitable Zone Stability Within the HD 141399 System, https://iopscience.iop.org/article/10.3847/1538-3881/acfb01, 10-Oct-2023. "Abstract The search for exoplanets has revealed a diversity of planetary system architectures, the vast majority of which diverge significantly from the template of the solar system. In particular, giant planets beyond the snow line are relatively rare, especially for low-mass stars, placing the solar system within a small category of systems with multiple giant planets at large separations. An exoplanetary system of note is that of HD 141399, consisting of a K-dwarf host star that harbors four giant planets with separations extending to ∼4.5 au. The architecture of the system creates a complex pattern of mean motion resonances and gravitationally perturbed regions that may exclude the presence of other planets, including within the habitable zone of the system..."

Another parameter or factor to use when discussing astrobiology and searches for ET phoning home.