This iron-nickel meteorite found near Fort Stockton, Texas, in 1952 shows a surface texture similar to some portions of the surface of an iron-nickel meteorite that NASA Mars Exploration Rover Opportunity found on Mars in July, 2009.

Chuck Rogers, Trong Bui, and Scott Bartel make preflight checks on the second of two aerospike research rockets on March 31, 2004.

A closeup of one of the Cesaroni Technology, Inc. - constructed aerospike nozzles used in the Dryden Aerospike Rocket Test.

Launch of the first Dryden Aerospike rocket. The Dryden Aerospike Rocket Test provided the first known data from a solid-fueled aerospike rocket in flight.