Episode 619: Open Space 60: Will Aliens Be Kind Or Cruel?

In this week's questions show, I wonder whether any aliens out there would be nice to us or try to wipe us out. What would be their motivations? Why are planets turning in the wrong direction? Would Betelgeuse generate gravitational waves?

XKCD Solar System Changes
https://m.xkcd.com/2258/

Phil Metger's take:
https://twitter.com/DrPhiltill/status/1220519840315736064

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