[SpookyZalost]

anyone done any time dilation calculations for travel time?

right now if you get the right slingshot orbit with a solar sail ship you can get approx .7C or 70PSL.
figuring in the time dilation factor it's about 14 years on ship for every 20 years traveled. or close to 25% slowdown.

given that I wouldn't mind making the trip out to Alpha centauri in cryo sleep on a sufficiently advanced ship, after all 40 years there and back isn't nearly as bad as 10,000 years.

and in other news.

K2-229, is a star with 3 exoplanets.
what's special about this star however is K2-229b, the closest in planet which is a super earth planet of a radius of 1.2 Earth radii and a mass of 2.6 Earth masses, hence a bulk density of 8.9 g/cm3, this super dense planet has more in common with mercury than earth and it's suspected to be mostly iorn core much like our innermost planet... basically it's an earth sized space cannonball.