Mars is a Spacecraft Graveyard
Reaching Mars is shockingly difficult, with nearly sixty percent of all missions ending in total failure. Many probes vanished or crashed before they could even beam back a single photo.
Because the landing process is so complex, space agencies often refer to the final descent as seven minutes of terror. While some missions were lost instantly, others defied all expectations. The iconic Opportunity rover was designed to survive for only ninety days but continued exploring the red planet for fifteen years. This high risk has turned Mars into one of the most challenging, yet rewarding, destinations in our solar system.
Source: Exploration of Mars