The Surprising Reason Why Some Jupiters Don't Get Hot: They Don't Have Stars
Have you ever wondered why some planets are so hot, while others in the same solar system remain cool? A new study suggests that the answer lies in the stars around them. Researchers from the University of Arizona have discovered that stars with more than one planet in their system tend to heat up the larger, “hot Jupiters” in their orbit, while the smaller planets remain relatively cool. This is due to the stars’ varying magnetic field and its interaction with the planets. The study provides a new insight into how planetary systems form and evolve over time.
source: Phys.org