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Not “OCD” but mission time constraints based on his project. If you can’t help, instead of being flippant or dismissive, don’t comment.

I’ve never seen the northern lights that far south on the regular. If you want to see the northern lights in Michigan, you need to get up on the south shore of superior like Copper Harbor. Cherry Springs is nice but most anywhere in the UP is darker.

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You’re already kind of near there but I prefer sleeping bear like 40 mins to the SW. you’ll get the lights of Traverse City a little bit more than you do Mackinac city but it’s just an overall easier experience for me. Anywhere you can find a dark spot at sleeping bear you’re good to go. I like the Dune climb parking lot or the place across the street, the Lake shore picnic area.

Here’s a pic I took from sleeping bear.

In Space no one can hear you stream.

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China isn’t putting people on the moon anytime soon

Probably sound like your Dad clapping your Mums cheeks at 300mph but much louder

Isn't it kinda like living in Oxnard...just throw your trash anywhere...its free..no one cares to pick it up

I forgot about the possibility of fusion but that seems like a later on mission since we haven't even cracked practical breakeven fusion here yet.

Don't know why I bothered turning the volume up.

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Then to extract energy from the hydrogen you can either burn it ( just recombine with the oxygen you just dissociated from) or put it in a (fusion) reactor.

Once we’re at the point of nano assemblers in orbit, the cost of mass to orbit will be a minuscule fraction of that.

Is it meant to be getting bigger?? Please stop

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I don't know how Earth could become so uninhabitable than humans would be better off elsewhere. Even after an all out nuclear war Earth would still be the most habitable place in the solar system. If we have to live inside habitat domes or whatever, it's a lot easier to build them here than in space.

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

|Fewer Letters|More Letters| |-------|---------|---| |GCR|Galactic Cosmic Rays, incident from outside the star system| |GeV|Giga-Electron-Volts, measure of energy for particles| |LEO|Low Earth Orbit (180-2000km)| | |Law Enforcement Officer (most often mentioned during transport operations)| |SoI|Saturnian Orbital Insertion maneuver| | |Sphere of Influence|

^(4 acronyms in this thread; )^(the most compressed thread commented on today)^( has 18 acronyms.)
^([Thread #8630 for this sub, first seen 28th Feb 2023, 07:30]) ^[FAQ] ^([Full list]) ^[Contact] ^([Source code])

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> It is outside Jupiter's massive radiation belt, which for reference does envelop the larger moon Ganymede.

On the surface of Callisto, you'd experience about 10x-12x the background radiation that you'd get here on Earth. That's manageable with strong radiation attenuating glass (according to this). However, many of these cosmology & space blogs ignore galactic cosmic rays/radiation (GCRs). Glass won't protect you from those.

According this this study, the amount of GCR hitting Europa's surface is reduced thanks to being inside the Jovian magnetosphere - this prevents a significant fraction of the GCR spectrum from reaching Europa's surface. But this is a double-edged sword, Callisto is less protected from GCRs since it's further away from Jupiter's protection. In fact, the study goes on to say:

> "In addition, the cut-off rigidity threshold is expected to decrease in energy as one moves outward in the Jovian magnetosphere. Therefore, the GCR contribution to surface radiation processing may be more significant at these bodies, particularly at Callisto, which is bombarded by magnetospheric particles at a much lower rate than Europa, and which does not possess Ganymede's intrinsic dynamo magnetic field."

GCRs aren't a huge issue if you're taking short jaunts to the Moon or a space station, but that (combined with radiation, solar flares/ejecta/particles, etc) isn't something you'd want to experience long term. And it's not just about raising your risk for cancer by orders of magnitude, it can make you sick/unwell which puts the entire mission at risk. See here and also here.

In this study about dealing with radiation on a potential manned-trip to Mars, they find the "overwhelming health risk" comes from GCRs. This is because they cascade and create secondary radioactive particles and so on. In fact, he thicker the material they pass through, the more secondary particles there will be in the cascade. In condensed matter (liquid or solid) the shower of a 1 GeV proton continues to grow until it reaches about 200 g/cm2.