"In order to search for biosignatures of past or present life, scientists need tools that are far more sophisticated than anything they can put on a spacecraft." Jonathan Lunine, planetary scientist at @Cornell & @CSInst fellow
https://patch.com/california/santamonica/s/h0ghx/nasa-plans-bring-samples-mars-back-earth?utm_source=dlvr.it&utm_medium=twitter&utm_term=community%20corner&utm_campaign=recirc&utm_content=aol … #Mars2020 #Mars @NASApic.twitter.com/jeycMPXDwB