**5. Conclusions**

Silicate and cryovolcanism both occur in a broad spectrum considering the proofs, traces, and remnants in our own system. The constraints and challenges for detecting any volcanic activity beyond our system are huge. Some parameters maybe even far more difficult for measuring than others. Bigger objects with volcanism probably based mainly on accretion energy or radioactivity may still be easier for far distance observation, detection, and measurement. Still, an accompanying approach by modeling, for objects in our own system as well as beyond, based on measurable or other feasible attempts seems reasonable.

Considering the models and also the underlying energy sources and evolution, tidal heating as an energy source can be highly variable. It may have a broader spectrum in occurrence than heating by stored accretion energy or radioactivity. Tinier objects may get energy for significant heating from tidal heating and less from accretion and radioactivity. Objects may start in conditions for tidal heating, move out or in these conditions, and may be stabilized by accompanying partners. The real spectrum of possible sets of moons, asteroids, and planets will be probably even much broader. Considering the fact of much larger amounts of tiny objects, the implications for the probability of worlds with volcanic activity of any kind powered by tidal heating are huge.

Being aware of possible long stable periods for liquid solvents on such volcanic worlds powered by tidal heating and also considering known volcanic structures as deep ocean vents serving as harbors for genesis and maintenance of life, the relevance of tidal heating for cryovolcanism/low-temperature geological activity becomes even more prominent.

By a combination of observational systems and models, by their improvement and mutual influence, description and measurement of volcanic worlds, as well as possible biotopes for life beyond our own system, seems to be achievable.

*Cryovolcanism in the Solar System and beyond: Considerations on Energy Sources… DOI: http://dx.doi.org/10.5772/intechopen.105067*
