Why does my second science experiment not work?

It's my first time trying deployed science and I'm really not sure how it's supposed to work. The first one was really slow, so I deployed a second one (side note: are they supposed to duplicate infinitely? After I deployed the first one, my kerbin returned to the ship and then suddenly there was another one available?). It wasn't working, so I deployed a second solar panel (same deal with the duplication. I'm sure I only put one on the ship at launch). It still doesn't seem to be working.