For any given Mars rover, there are three major and newsworthy events in its life: launch, landing, and discovery. Aside from those times, hardly anyone is paying attention to the myriad of images being sent back on a non-stop basis. Only the most hardcore Mars nerds or those who operate the rovers will see them. Or, anyone who follows a Twitter bot that automatically tweets the pictures. It’s thanks to this bot that word is getting out about Curiosity’s cracked wheels.