From
Andrew Jaeger
Are we alone, or are there other living planets in space? This question has occupied people for a long time, and it is not easy to answer. The Milky Way extends over an area of almost 200,000 light years, and there are hundreds of billions of stars in our home galaxy. Somewhere in these expanses could be a celestial body on which living organisms exist or existed – far too distant to send an expedition there. But what if traces of extraterrestrial life could also be found in our solar system, or at least tiny fragments of it?