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He'd previously invented the first vacuum pump.

Me

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Where in space? Anywhere about 500ks above the surface of the earth where the density of gas particles is down to around 10,000 per cubic metre.. For context, down here on earth there are literally TRILLIONS per cubic centimetre.. 5.8 x 10 to the 18th power actually.. so that's 5,800,000,000,000,000,000 molecules, or 5,800 billion billion molecules, per cubic centimetre so, if you have a chamber with that many molecules, pushing on every square centimetre of the outside, and only 10,000 or so random stragglers zipping around inside, there's no f$@king way in hell you're ever pulling that apart. I have a vacuum pump which I use for degassing epoxy resin, it pulls a 98% vacuum on the chamber.. but even at 10%, it is literally IMPOSSIBLE to pull the lid off, or even move it with your fingers. The lid is a 20mm acrylic disc about 1 foot across, so that's about 108sq inches, with 14.7 pounds of outside air pushing down on each sq inch.. over 1580 pounds of force at full vac.. Even at 10% that's still 160 pounds of upwards force required to pull the lid off.. It could probably be done by hand.. but I like my fingernails attached to my fingers, so I haven't attempted this ;) on a side note, what do you mean by "plasomshpere"? That's not a word.

@@GenoLoma when I typed plasmosphere I failed to proof read my spelling. At first I started typing plasmasphere and changed it to heliosphere. If I would have proof read what I wrote you wouldn't have had to write out such a long drawn out reply. Or maybe you would have idk.

​@@frankh.3849"Space" is anywhere devoid of an atmosphere. The generally accepted place where "space" begins, is 100 kilometres (60 miles) above the surface of the earth.. At that altitude you're above 99% of the earth's atmosphere, and life is impossible without some form of protection. Different planets would have different altitudes based on the density and volume of their respective atmospheres.. The moon for instance, has almost no atmosphere, so space begins at the surface.. Jupiter on the other hand, has a dense rocky core about the size of the planet Mercury, but then has over 65,000 kilometres of gasses heaped on top.. so space begins well above that.. The Heliosphere stretches out past the area of the Kuiper Belt.. 'Interstellar' (the space between stars) space begins out there, but 'regular' space begins a lot closer to home..

American Vacuum Society

that causes additional outwards pressure that can crack the outer fitting.

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