In exoplanet systems, what external energy source can help sustain a molten core state?

Answer

Tidal heating from a nearby star

Tidal heating, caused by the gravitational flexing exerted by a parent star on a closely orbiting body, can provide significant energy to keep an interior warm and sustain a molten state.

In exoplanet systems, what external energy source can help sustain a molten core state?

#Videos

What a Journey to Different Planets Cores Looks Like - YouTube

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