Also, while TARDIS is an acronym for “Time And Relative Dimension In Space”, DARTIS stands for “Dimension And Relative Time In Space”, which obviously makes perfect sense.
If it wasn’t trademarked by the BBC I would definitely opt for TARDIS, the hybrid of time machine and spacecraft. I am no lawyer, so I cannot tell if this is a possibility after all.
However, it ticks so many boxes:
Reference to space → Fediverse
Reference to timeline(s) → Mastodont
Bigger on the inside → Lemmy
Tribute to a crazy fun SF series
Cool icon
I personally have a weakness for a reference to pop culture (e.g., like the programming language Python is a tribute to the British comedy group Monty Python).
To be safe, we might use an anagram instead: DARTIS. As a bonus we will have a nice story behind the name.
https://lemmit.online/