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

[gaelicpatriot]

It’s probably either a steamball or a mini-Venus but with an extremely large atmosphere

[Flesh_Wizard]

They might be "steam giants/dwarves"
Planets with a gas/ice giant like atmosphere but with water and carbon dioxide

[ntilewills]

I had an idea for one of you videos. Ganymede is the only known moon to have its own magnetic field, if you replaced our moon with Ganymede, then slightly adjusted its distance to earth so its effect was roughly the same on the oceans. I bet this would be an incredible sight.

[FLAGMACHINE]

Your videos really hit the spot for exoplanets. Straight to the information I actually want to know, the non emotive presentation actually helps my imagination work and makes these places seem more real.

[ZackMaxYT]

Surprised this channel hasn't reached a million yet

[anekdoche]

damn, never thought that gas planets could be small, that's pretty cool to thing abt

[TheFailLord]

Going to listen to this tonight, Dreksler your videos are fantastic. Great job putting in the work, much respect brother.

[christmassnow]

Red dwarf stars are subject to frequent solar flares and corona mass ejection, generating radiation and solar winds which can strip planets of their atmosphere. Having a gas dwarf close to the parent star gives hope for finding planets in the habitable zone and which may host life.

[DanielWatson-vvcd]

Those small gaseous exo-planets are probably similar to Saturn's moon Titan.

[aktuellyattee]

instead of gas giant, we could call it a gas itsy bitsy little buddy

[Auroldén]

Wow! The solar system is truly odd. Imagine all the life forms a world like that could spawn in the habitable zone.

[PsillyApeUSA]

What holds that thick atmosphere in place? The core has to be insanely strong gravitationally. I don’t believe they are completely gaseous if an iron core is the only thing holding the gas together.

[salam-peace]

3:15 That line-up of planets in the Kepler-138 system looks a lot like the four terrestrial planets of our solar system, the sizes are very similar and even the colors fit.

[somethingforsenro]

not to be a stickler, but… 3:00 hydrogen and helium can act like a fluid at any pressure. gas is a fluid

[Hazie]

It's probably a diddy-dwarf planet with oceans of baby oil

[Nightscape_]

It is always impressive how much better our telescopes get each decade. I hope we find an exomoon soon.

[ARWest-bpyb]

We're finding all kinds of planets that we never expected. Anyone out there looking at our solar system must think that it's pretty unusual in that there are no super earths/mini Neptunes, hot Jupiters or gas dwarf planets. Thanks Drex!👍👍

[thealextrifier]

I always wonder how gas full on forms a planet let alone with strong gravity. I mean it’s just gas, you can’t even stand on it. So baffling.

[godzillaedits]

Can you do a timeline of Mars video also love your videoes

[EvilShadow]

There are also hycean planet and they are similar to oceanic planets