The agency is starting down two different paths toward the samples' return, but only one will bring the red rocks home.

Nasa has unveiled a revised plan to bring samples from the surface of Mars back to Earth. The space agency has announced it would be pursuing two potential options, both costing around $7billion, to retrieve rock and soil samples currently being collected by the Perseverance rover - dramatically reducing the mission's cost from $11bn and

The cost and schedule for returning Mars samples has been significantly revised. NASA is looking for efficient alternatives to bring the valuable soil samples back to Earth faster and more cost-effectively.