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Comment by amorphid | Hacker News Reader

If resurrecting dinosaurs via ancient DNA could possibly be a thing (pretty sure it can't), I wonder how big dinosaurs could get on the moon. I believe gravity was the limiting factor in how big land based dinosaurs could get, so how big could get in Lunar Jurassic Park in ~1/6th Earth gravity.

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Assuming mass scales linearly with volume, the cube root of 6 is 1.817ish

So moonisaurs would be roughly 82% larger if you just scaled them up until they weighed the same as they did on Earth.

It's a really sloppy estimate, but think more on the scale of twice their size on Earth than six times their size.

The low gravity is probably what I would have the most fun with. I can imagine all sorts of activities could get a lot more fun. I could learn to do a standing backflip, or even manage to finally break 400lb on my deadlift. :)

Wouldn't trying to deadlift more than 400 pounds be the same amount of effort on the moon? Granted, it would have to be that much more massive, so it would certainly LOOK more impressive.

Picking it up is the only part that gets easier.

No. 400 lb is 1779 newtons on Earth, but 294 newtons on the Moon. Newtons are really what defines the effort needed to lift an object.

That's what I was commenting on though; I very well may be wrong, but my understanding was that the weight of things like barbells is measured in pounds-force, not pounds-mass, so if you were going to follow that on the moon you'd need a much more massive set of weights.

Though, I suppose if you're saying "I'm taking these exact same weights to the moon to lift" then you're right. I was being unnecessarily pedantic.

I see :)

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