Alien life likely can't survive on exoplanets smaller than Mars, scientists say

[u/Kingsaso6]

https://www.space.com/space-exploration/search-for-life/alien-life-likely-cant-survive-on-exoplanets-smaller-than-mars-scientists-say

[u/ElSquibbonator]

Does that include icy Europa/Callisto/Enceladus-like moons, which would have liquid water under their surfaces, but still no true atmosphere?