A NASA rover just conquered a treacherous climb on Mars

The Perseverance rover has reached the top of the Jezero Crater rim on Mars, a hike that rose 1,640 feet — higher than the Empire State Building is tall. NASA mission leaders said the rover, which had embarked on the journey 3.5 months ago, got its first look at its destination on Dec. 10. From there, the mobile lab will begin its fifth science campaign, pursuing a route dubbed "Northern Rim" that will span several years. On the drive up, Perseverance encountered steep, slippery