I used bow tie tool in galaxy to align my reads from Miseq for small RNA sequences against human genome. I got two files as results (aligned and unaligned). When I tried to open the result (.BAM file), the file is downloaded instead of being shown on the galaxy window as we see for other tools (such as fastqc, clip adapters, and so on). I can't open the .BAM because of lack of suitable application. What am I doing wrong here ? I use Mac OS X. It seems I have to download some application to open and analyze the .BAM file.
Thanks for your help in advance.