Nasa to laser mark graffiti on Martian rocks to identify rock samples
Nasa has laser marked graffiti on Martian rocks to identify rock samples that will be brought to Earth for study.Nasa's Perseverance rover is currently collecting Martian samples from the 45 kilometres- wide Jezero crater for future return to Earth, along with hunting for signs of ancient Mars life.The samples will be brought to Earth, perhaps as early as 2031, by a joint Nasa-European Space Agency mission campaign.However, for the rock collection, original orientation is necessary, said Roger Wiens, Principal…