What's the difference between a young exoplanet and an old one?

[Admin]

A new study compares young and old exoplanets to uncover how worlds shrink, migrate and evolve over time — offering insights into long-standing astronomical mysteries like the "hot Neptune desert" and the "radius valley."

What's the difference between a young exoplanet and an old one? : Read more

 

[rod]

"The team divided the observational subjects into two age groups: young planets (10 million – 100 million years old) and intermediate-age planets (100 million years to 1 billion years old). They then compared the occurrence rates of these planets using data from NASA's TESS, or Transiting Exoplanet Survey Satellite, for the younger population and from Kepler for the older population. In short, the scientists found a higher occurrence of young planets."

This exoplanet site shows 7442 today, https://exoplanet.eu/home/

3650 provide host star age. 10-100 million year ages, 89 exoplanets show up in this age range.

100 Myr to 1 Gyr age range, 340 exoplanets found. Plenty there to study