re: #7 Dr Lizardo

If you had a spaceship that could travel as fast as light (that’s Warp 1 to you Star Trek fans), it would take you over five hours to get to Pluto and over four YEARS to get the next closest star system (Alpha Centauri).

This means that for feasible interstellar travel, you’d need some way of travelling even faster than light. I’m not master engineer but I can imagine such a means of propulsion would require considerable amounts of energy to run so it would be a big undertaking for humans or any other sentient species.

Is there life on other planets? Most likely. There are so many stars and planetary systems in the universe that I have to think there are living things (even if only microbial) on some of them. As for other sentient races, that’s anyones guess.

Also, as has been mentioned previously in this discussion, a UFO is simply any unidentified object in the sky. My nephew has a drone with blinking lights on it that some people might think is an alien aircraft floating through the night sky. The fact of the matter is the odds of any UFO actually being an alien spacecraft are significantly lower than my odds of hitting the PowerBall next week.