Do not read on if you do not want to know about HALO 3 before you finshed it yourself

i was wondering at the end when you finished campaign in normal, is theres anything else besides the message of bungie, i pressed A to continue and beforer i knew it it came back top the menu screen, which is to say a little dissapointment, i was hoping for a closed end. Should i have done nothing when the message came by and let it finished it where perhaps more will be revealed and normally let the credits slide by?

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Interestingly, according to modern astronomers, space is finite. This is a very comforting thought-- particularly for people who can never remember where they have left things.