I think it's unlikely we will find any life on Mars, only the most optimistic folks hold any hope and there is nothing that even suggests it. Whether or not i

I think it's unlikely we will find any life on Mars, only the most optimistic folks hold any hope and there is nothing that even suggests it. Whether or not interstellar travel is possible is an interesting question. We are talking about tremendous amounts of energy, time, and incredibly reliable devices. It may simply not be practical or possible. What seems must likely to me is we will sniff out pollution in an exoplanet atmosphere and then there will be lots of discussions and debates about whether or not it could naturally happen. Lack of any radio communication sure is a puzzle though