<https://thedebrief.org/planetary-scientists-used-this-new-model-to-crack-a-pair-of-puzzling-astronomical-mysteries/>

Planetary Scientists Used This New Model to Crack a Pair of Puzzling
Astronomical Mysteries

Micah Hanks
3 Jan 2023
The Debrief

....

A pair of puzzles that planetary scientists have observed amidst 3,800
different planetary systems may have been solved, with the aid of a new
model that considers the influence of various forces on young planet
formation.

For the last decade, astronomers have been aware of an apparent dearth
of planets of a particular size: those with radii between 1.5- and
2-times Earth's radius, with an average radius or "valley" of about 1.8
times that of our planet. This phenomenon, known as the small planet
radius gap or "radius valley", was first observed during exoplanet
studies in 2013 by NASA's Kepler spacecraft. The probable cause was
determined to possibly be the result of mass-driven loss of planets
within this size range due to an atmospheric stripping process called
photoevaporation that occurs on some low-mass planets.

Equally mysterious to astronomers had been the curiously harmonious
orbital spacing of exoplanets of similar size to one another around
their parent star, observations of which have now been logged in
hundreds of galaxies. The phenomenon, appropriately nicknamed "peas in
a pod", was discovered by Universit� de Montr�al astrophysicist Lauren
Weiss and colleagues in 2018.

Now, according to new research published in Astrophysical Journal
Letters, new light is being shed on these pressing exoplanetary
mysteries.

....

--
Section 8. Unidentified Flying Object (UFO) Reports
Persons wanting to report UFO/unexplained phenomena activity
should contact a ... data collection center, such as the National UFO
Reporting Center, etc.
-- www.faa.gov, as at 30 Nov 2022

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