Why do space probes and robots need to send samples back to Earth when they have analytical equipment on board?

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I’ve seen some of the Martian rovers are collecting samples to be sent back to Earth to determine the presence of microbes on Mars. But why do they need to be sent to Earth? Why can’t the analytical equipment on board detect it?

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Anonymous 0 Comments

why do you check the oil level on your car by pulling the dipstick out, wipe it then dip it again

if you did the double dip and an actual qualifed and time served mechanic said hey can i dip it again then tell you what i think most of us would say yup go for it dude let me know what you think

the stuff we send to other planets does the manual work but its super expensive to send even 1 gram of weight into space. So we give them enough tools to give us an indication of stuff

we still want that stuff sent back to earth so some super clever people in labs can take a look at and go yo send your next many millions and hundreds of millions of monies and all that time it will take into this place we have figured out we need to look at next based on what we have been able to study

for the now. the future will change and we can go all sci fi on this and have probes that do many more things, or send their information back to more advanced space stations.

we have one ISS. it can’t do everything we can do on earth. the probes can’t do everything we can on earth. so for now everything needs to come back to earth

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