Do we really want a supernova going off only 700 light years away? And during a grand solar minimum when our sun’s ability to deflect incoming cosmic rays is minimized. Not that there’s anything we can do about it, at least not beyond prayer, but I hope someone has thought through how close we can survive a supernova of a given size and knows this in beyond the danger zone.
I was about to ask if that thing can do us harm,
As long as its poles aren’t pointed at us we’ll be OK.
Other wise the Gama Ray burst will fry us even at 700 light years.
That's a good question, and I don't know the answer. I do know that we don't want to be anywhere near a Gamma Ray Burst, and 700 light years might be too close for that. A Gamma Ray Burst is kind of like a supernova, except it is more a directional energy burst like a laser rather than a spherical explosion of a supernova.
DANGER DANGER
Betelgeuse is too far away for it to be a danger. The real danger from a type II supernova, anyway, is the shock wave, not the radiation front, and that travels much slower.