Hey guys have a bit of speculation to add here. I'm a little behind the thread for today, so I apologize in advance if this has already been talked about. So after reading MB's post a day or so ago, talking about how something relating to barnacles was quite logical if we thought about it, I started thinking about what else could be logical given that thought process.
First off, Barnacles imply oceanic life. They need organics, probably carbon to be contained as well as other life sustaining elements, such as water and oxygen. Also in the game files, barnacles are refered to as baranacle seeds and seem to take on a similar role such as a cargo rack at a crash site, or a material in pre broken form.
Since no planets have atmospheres therefore would not retain water in a liquid state, the next closest thing we could get would be ice. Interestingly enough Ice planets have a interesting description: "Ice world composed mainly of water ice. Worlds like this will not have had much heating in the past, forming in the cooler regions of a star system and have retained many volatiles as solids within their crust." After a quick google search: In planetary science, volatiles are the group of chemical elements and chemical compounds with low boiling points that are associated with a planet's or moon's crust and/or atmosphere. Examples include nitrogen, water, carbon dioxide, ammonia, hydrogen, methane and sulfur dioxide. This pretty much proves that these ice worlds would have the carbon needed for life, the oxygen/co2/ammonia/methane for a breathing of sorts. and maybe the nutrients as well? (if it's not too much of a stretch). Not only that, but it would also have a solid surface to attach itself to, in order to be more barnacle like as we know, justifying the name.
Also I ran through the list of the "used to be permit" planets and filtered them out a little.
Pleiades Sector HR-W D1-79 (2 Rocky Planets, lost all volatiles)
Pleiades Sector DL-Y D68 (No planets to land on)
Pleiades Sector DL-Y D65 (High Metal and Ice World)
Pleiades Sector HR-W D1-74 (14 Planets, with lots of Ice World Planets)
Pleiades Sector HR-W D-177 (No planets to land on)
Pleiades Sector HR-W D1-76 (No planets to land on)
Pleiades Sector DL-Y D67 (No planets to land on)
Pleiades Sector HR-W D1-75 (No planets to land on)
Pleiades Sector HR-W D1-78 (No planets to land on)
Just wanted to validate my theory a bit, hopefully I'm not making too big of jumps. None of the worlds besides the Metal one is close to 1g. Also some of the Ice Worlds do end up sharing a more dirt like color as in the trailer. Good luck commanders o7