A few months from now, a NASA spacecraft called the Mars Reconnaissance Orbiter (MRO) will begin its 20th year of observing the Red Planet from above. And, like most 20-year-olds on Earth, MRO's camera roll is absolutely packed.
According to NASA, MRO has just taken its 100,000th photo of the Martian surface using its HiRISE camera. Put another way, that's an average of 5,000 photos a year, 417 photos a month, or about 14 a day every day since March 2006.
