Terracosmo would mean something like "Vast Universe" though that's not why I chose it...

My first nickname online was Omega Cosmo. But with time I found that it sounded dorky so I removed Omega and called myself Cosmos, which is the nick I use at most places. Then when I signed up here a sunny day back in the summer of 2003 I had a sudden urge to create a NEW AND UNIQUE VARIATION TO COSMOS!!! So I removed the "s" and added a random cool word before it.

TADAAAA!