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A laser will be used by NASA to mark graffiti on the rocks of Mars

Science

A laser will be used by NASA to mark graffiti on the rocks of Mars


By TechThop Team

Posted on: 27 Jul, 2022

As part of NASA's efforts to identify rocks from Mars that will be brought back to Earth for study, laser-marked graffiti has been added to certain rocks on Mars. Perseverance

NASA's Mars rover is currently collecting samples from the 45-kilometer-wide Jezero crater on Mars to return them to Earth in the future, as well as looking for any signs of primitive life on the planet.

During a joint NASA-European Space Agency mission campaign which is set to launch as early as 2031, the samples will be brought back to Earth. Roger Wiens

Principal Investigator of the SuperCam instrument at Purdue and Co-Investigator of the SHERLOC instrument at Purdue University, says that for the rock collection, original orientation is necessary, he said in a statement.

There is a major reason for this, which is that samples taken from fine-grained surfaces can be difficult to differentiate from one another. According to Wiens, we need to know the original orientation of all the rock core samples from Mars that are returned to Earth. 

In any case, if the surfaces of those core samples have easily recognizable features, that is not a problem. That has been the case so far with every one of the samples that we have collected. However, if the surface is fine-grained, there may not be anything that can help distinguish its rotational orientation.

There is no problem if the surfaces of those core samples can be easily distinguished from one another. This has proven to be the case with some of the core samples collected, so far. However, it may be difficult to distinguish the rotational orientation if the surfaces are fine-grained. 

Moreover, Wiens revealed that the first alphabet to be engraved was the letter 'L'. He said: 'If your name begins with 'L', then you will be interested in this post about the first letter to be laser engraved on Mars,' he said.

In June, Perseverance used a laser that is part of its mast-mounted SuperCam instrument to zap three dots in the shape of the letter L into a rock with a laser that is part of the instrument.

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