Mars Scientists Investigate Ancient Life in Australia
                                                                                                                        
                                                        Scientists from NASA's Mars 2020 and ESA's ExoMars projects study stromatolites, the oldest confirmed fossilized lifeforms on Earth, in the Pilbara region of North West Australia. The image was taken on Aug. 19, 2019. Credit: NASA/JPL-Caltech                                                    
                                                                                                            
                                                            NASA