What seven decades of hunting for aliens tells us

Since the 1950s, humanity has been searching for extraterrestrial life with increasingly sophisticated tools. But after decades of space probes, meteorite analysis, radio telescopes, and UFO investigations, what have we actually found? A new piece of analysis by a team led by Seyed Sina Seyedpour Layalestani from the Islamic Azad University in Iran has looked at the most compelling evidence to date; from ancient space rocks that fell to Earth carrying the building blocks of life itself. The paper is published in the International Journal of Astrobiology.