APOD and General Astronomy Discussion Forum
https://asterisk.apod.com/
Mercury wrote: ↑Thu May 06, 2021 5:50 pm
by Ken Croswell
A wave in one of the rings reveals the size and composition of the planet’s core.
Link: Science News
Wow, very interesting indeed! Thanks, Mercury!Mercury wrote: ↑Thu May 06, 2021 5:50 pm by Ken Croswell
A wave in one of the rings reveals the size and composition of the planet’s core.
Link: Science News
Ann wrote: ↑Tue Aug 17, 2021 4:27 amWow, very interesting indeed! Thanks, Mercury!Mercury wrote: ↑Thu May 06, 2021 5:50 pm by Ken Croswell
A wave in one of the rings reveals the size and composition of the planet’s core.
Link: Science News
Too bad that Jupiter doesn't have the sort of ring system that allows scientists to discover properties of the Jovian core through perturbations of its nearby rings. Oh well, scientists appear to be pretty convinced that Jupiter doesn't have a solid core, and that there are turtles - I mean metallic hydrogen - all the way down.
https://en.wikipedia.org/wiki/Jupiter#Internal_structure wrote:
<<Before the early 21st century, most scientists expected Jupiter to either consist of a dense core, a surrounding layer of liquid metallic hydrogen (with some helium) extending outward to about 80% of the radius of the planet, and an outer atmosphere consisting predominantly of molecular hydrogen, or perhaps to have no core at all, consisting instead of denser and denser fluid (predominantly molecular and metallic hydrogen) all the way to the center, depending on whether the planet accreted first as a solid body or collapsed directly from the gaseous protoplanetary disk.
When the Juno mission arrived in July 2016, it found that Jupiter has a very diffuse core that mixes into its mantle. A possible cause is an impact from a planet of about ten Earth masses a few million years after Jupiter's formation, which would have disrupted an originally solid Jovian core. It is estimated that the core is 30–50% of the planet's radius, and contains heavy elements 7–25 times the mass of Earth.>>Click to play embedded YouTube video.