Planetary Atmospheres Minor Species Sensor can detect tiny traces of gas . It can detect just one molecule of methane among a trillion other molecules . The only way to tell if there is life on Mars, or any planets in the solar system for that matter, would be by detecting these small amounts of water and carbon dioxide.
Planetary Atmospheres Minor Species Sensor can detect tiny traces of gas . It can detect just one molecule of methane among a trillion other molecules . Toaster-sized instrument flew 19.8 miles above Earth 's surface in first test . It spent an hour at 105,000 feet collecting data before parachuting to Earth . Nasa hope to send it to Mars and other planets to search for signs of life .