Spirit is 2 years old today! Opportunity will celebrate on the 24th. They just keep going and going and going …
yay birthdays!!! *throws confetti! 
Awesome
It’s really cool how long they have been running! 
Well, you do know that they are powered by Energizer batteries, ehh… not really, but pretty darn close, actually, not even close at all.
Happy Birthday Spirit from a martian on Earth. Now phone home so that we can sing happy birthday to you!
Happy birthday Spirit. Thanks for all the amazing Mars pictures