I didnt link it because I couldnt remember where I found it, so I went searching and I got it by downloading JPARSEC from this site: http://conga.oan.es/~alonso/doku.php?id=jparsec To find the earthmap1.jpg file you have to look inside jprarsec.jar and look for textures.jar, it is inside that.
BTW, JPARSEC is very cool and is written in java. I’ve used some of it in a few sketches.
Here’s the link to jparsec/lib which contains textures.jar