Arduinos and space, sounds like fun.
Wish I was an "experienced individuals belonging to this site" who could give you some "expertise" on the subject, but I'm not 
But wait... Maybe I can give you some "guidance" to someone or someones who can.
Have you ever heard of ArduSat?
Check out this video
Talk by Jonathan Oxer at linux.conf.au 2013 conference in Canberra, Australia about ArduSat, the Arduino-based satellite platform. For more info see www.freetronics.com/ardusat