Are the planets heat source from their core? Especially the gas giants?
Much like the other gas giants in our Solar System, the core of Uranus gives off far more heat than is absorbed from the Sun. However, with a core temperature of approximately 4,737 °C, Uranus' interior gives of only one-fifth the heat that Jupiter's does and less than half that of Saturn.
With temperatures dropping to -218°C in Neptune's upper atmosphere, the planet is one of the coldest in our Solar System. And like all of the gas giants, Neptune has a much hotter core, which is around 7,000°C.
What is the average surface temperature of the planets in our solar system?
In an Electric Universe - if planets, moons, stars, solar systems, galaxies, galaxy clusters and the universe are connected in a circuit - then planets and stars could be converting energy received from electromagnetic plasma, such as the plasma solar wind from the Sun.
This could explain why the gas giants Saturn, Jupiter, Neptune and Uranus are emitting more energy than they receive from the Sun.
Why the Earth is warm, especially the deeper you go. Why it produces an abundance of oil, gas and water found deep in the earth. And our magnetic field.
Perhaps planets excess energy emitted is not due to latent heat from their formation billions of years ago, especially for the gas giants?
External article quotes and links
Jupiter is five times farther from the sun than the Earth is; at this great distance, it receives a fraction of the sun’s warming rays, keeping the planet very cold. Based on the energy Jupiter receives from the sun ... Jupiter must be generating its own heat at a rate comparable to what it receives from the sun.
What Planet Gives Off 2 Times as Much Heat as it Receives From the Sun?
Saturn emitted less energy each year from 2005 to 2009, according to observations by NASA's Cassini spacecraft, but Saturn's southern hemisphere consistently emitted more energy than its northern one and those energy levels changed with the seasons.
Why Does Saturn Radiate Twice The Energy It Absorbs From The Sun?
his modeling suggests that these planets are heated by an electric current running deep through the planet's interior. It's plugged into an external power source — the host star. The interplanetary power supply would offer a new solution to a mystery that has vexed astronomers for over a decade.
How to Toast a Planet
It has been observed that hot Jupiters located within 0.08 AU of their host stars commonly display radii in excess of those expected based on models ... I propose that the primary mechanism for transferring energy from the magnetosphere to the planetary interior is Joule heating arising from global electric circuits analogous to those seen in solar system objects.
Stellar Magnetic Fields as a Heating Source for Extrasolar Giant Planets