Smallest Gas Planets Found

How small can gas engulfed planets get? Well, a large part of that depends on what counts as a gas dwarf. However despite the problem with the definition, this video covers examples of planets that definitely do lean into the territory of being gas dwarfs, such as the Kepler-138 system and HD 110067 system. Still both of those systems among all other mini neptunes found, has planets that likely mostly have water vapor gas instead of hydrogen and helium, so the final exoplanet talked about LHS 1140 b is used as an example of not a planet that is a gas dwarf, but one that potentially has plenty of hydrogen and helium exactly due to the size, mass and likely temperatures present there, and yet no other example of a mini neptune in that temperature range is found so far.

0:00 - Kepler-138 system
3:04 - CORRECTION: Gas acts like a *liquid at high enough pressures, both gas and liquid are fluids
3:14 - The rest of the section
6:16 - HD 110067 system
8:47 - LHS 1140 b - A relatively small planet with the potential to have hydrogen and helium in the atmosphere

All clips found in this video were made with Space Engine.

Music:
1. Audionautix - Deep Space
2. Audionautix - Sunrise on Mars
3. Kevin MacLeod - Long Note Four
4. Kevin MacLeod - New Direction