Comments by "Digital Footballer" (@digitalfootballer9032) on "Intelligent Life on Other Planets" video.

  1. One thing you must take into account when estimating the time it would take to reach distant star systems is acceleration/deceleration of the vessel. For example proxima centauri is roughly 4 light years away, but you wouldn't get there in 20 years going 20% the speed of light, it would take longer because you have to take into account the time it takes to reach maximum velocity and to slow back down, which is not instantaneous. It would likely, even with very advanced propulsion systems, take a fair amount of time to reach the top speed and an equal amount of time to slow down (there are no brakes in space so you have to fire the thrust backwards). This would add considerable time to the journey.
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  2. The best candidates for life would be planets around G-type stars (like our sun) as well as K-type stars, which might even be better because they last twice as long as G-types, but are hot enough that the habitable zone wouldn't be so close as to tidally lock the planets within it. Red dwarves are not very promising for finding life because if tidal locking as well as their tendency to have violent flaring.
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