All album releases (except for "Horizonterweiterungen", which could be considered a maxi-single) begin with the "Welle: Erdball" track. It is also true for "Es ist an der Zeit", released under the Feindsender name, where the track is simply called "Intro".
Yes, there are different spellings on the official webpage, wikipedia, myspace, last.fm (user tags) and so forth.
However, what is most important is what is on the releases, that is Welle: Erdball.
I have 4 albums in front of me. On every imaginable place there is a SPACE in between. Spine, back cover, 1st track (which is always named "Welle: Erdball") and in the text in the booklet.
On the front cover they use a stylized variant with two lines.
Not to mention, that the ":" needs to have a space afterwords in this context. "radio station: globe"
see also edit 12612123