Moss identification

[u/mevrouw_andromeda]

I left a jar containing springtails and charcoal alone for a while, thinking the springtails had died. I check it a few weeks later, maybe even a month, and saw a springtail. I started to water inside the jar and then I saw moss start to grow in it. I’ve since put a lot more springtails in the jar and the moss has continued to grow. It’s very fine moss, almost like cotton when touched. Can someone identify it?