Reviving Project Orion would be more fun! And for sure, the 150,000 pound weight of this "Stargrazer" vs the 11 Million pounds of SpaceX's starship certainly r

Reviving Project Orion would be more fun! And for sure, the 150,000 pound weight of this "Stargrazer" vs the 11 Million pounds of SpaceX's starship certainly reduces it's blast radius! I didn't say it'd be great, just that SpaceX more likely to be first (and no, I'm not a fan of Elon, used to think he was doing great things, but he's obviously decided that supporting autocrats & trolls is more important). The 20,000 RPM rotating detonation engine doesn't seem exactly quiet, so they'll likely need regular jets in addition to the rotating detonation engine and rockets; not exactly simple. Meanwhile, SpaceX could solve lots of those problems by landing further away from the cities, which will negate much of the fast-trip advantage, and so leave a good market opening for 'Stargazer'. If both work, I'd probably rather go with Stargrazer, but I still expect SpaceX will be first (unless it goes the same way as the sub-5-minute battery-pack-swap feature on the Teslas...)