[MORE: NASA is about to land the first tiny helicopter on Mars]With so much money flowing into the new Perseverance rover you can’t help but wonder, could the mission fail? The rover’s landing has been dubbed “seven minutes of terror.”“Entry, Descent landing is the most critical and most dangerous part of the mission success is never assured. And that’s especially true when we’re trying to land the biggest heaviest and most complicated rover we’ve ever built,” Mars 2020 entry, descent and landing lead Allen Chen said. During the descent, NASA teams will be in the dark, hence the scariest seven minutes of the mission. “We certainly don’t want to land on that,” Erisa Stilley, Perseverance entry, descent and landing engineer said when referring to the cliff.