lutorm

32 ms·

211.
by lutorm 5y ago
Moreover, higher CO2 content in the oceans leads to acidification. This is bad for coral and organisms that build shells. I don't recall the exact reason but my understanding is that it tends to dissolve carbonates.
212.
by lutorm 5y ago
Trees, unless you clearcut them (or they die off due to climate change) permanently lock up carbon. Yes, some die and decompose, but new ones grow up to take their place. It's just the total amount of biomass created that matters.
213.
by lutorm 5y ago
I think at this point emissions reductions is a matter of will, not technology. Rather than waiting for some technological magic bullet when it comes to emissions reductions, we need to take aggressive action. But we're going to need
214.
by lutorm 5y ago
It's probably more reasonable to invoke antitrust if companies have such a dominant position that getting banned from one dooms your business.
215.
by lutorm 5y ago
the highest level since accurate measurements began 63 years ago Not to detract from the seriousness of the increasing CO2 level, but doesn't _every_ year set a new record for CO2 level?
216.
by lutorm 5y ago
No, the "parts" in ppm reduce, but the "millions" does, too. It's a ratio. (There might be a tiny effect due to the fact that CO2 is heavier than air, so as you go up you might expect the CO2 to mostly have settled
217.
by lutorm 5y ago
For practical purposes, I get by 99% of the time with 1 (statute) mile == 1.5km.
218.
by lutorm 5y ago
https://www.spacex.com/internships/
219.
by lutorm 5y ago
Note that part 2 is also out now: https://stackoverflow.blog/2021/05/11/building-a-space-based...
220.
by lutorm 5y ago
If you analyze the physics, you find that the way the inertia works out is that smaller things need shorter control cycles. The relevant timescales for large objects ends up being longer.
221.
by lutorm 5y ago
Do new macs not show the "sad mac" or "cross-eyed mac" if they can't read the boot drive?
222.
by lutorm 5y ago
The issue in this case is not security clearances, but getting authorization to share ITARed data with foreign persons. There are SpaceX jobs that require security clearance, too, but they're in the minority.
223.
by lutorm 5y ago
Presumably he's talking about the Space Transportation System, colloquially known as the "Space Shuttle".
224.
by lutorm 5y ago
No one's saying you can't freelance. But there are some pretty clear rules about what you should be able to do in order to really be a freelancer: choose which jobs you take, set your own hours, decide how you want to do the job,
225.
by lutorm 5y ago
hasn't even launched into space yet SLS I'm no fan of SLS, but check your terminology here: You're talking about Starship in the present tense, but it hasn't launched _either_, so you can't say it "can"
226.
by lutorm 5y ago
You can’t cheat your way to publishing original research Of course you can, making up results is a time-honored tradition! It does take a certain amount of skill to do it believably, though.... ;-)
227.
by lutorm 5y ago
Orals have a lot of advantages, but they also make it very easy for unconscious bias to come into play, in that all the criteria for grading are soft.
228.
by lutorm 6y ago
the fact that some people treat them like a sports team is a little jarring to me. You don't think sports teams are "just companies"??
229.
by lutorm 6y ago
It doesn't seem obvious that this is a good strategy for personal wealth management because besides maximizing expected wealth, there's another very important criterion: minimizing probability of going broke. I only get to play on
230.
by lutorm 6y ago
Yes, it translates into a higher apogee, but not a higher perigee. So they will still come down to the altitudes with higher drag.
231.
by lutorm 6y ago
If you were to collide two LEO satellites and turn them into fragments, even if you give those fragments much higher velocity than the initial satellites, you _cannot_ launch them into a higher orbit. Fragments that are launched down obviou
232.
by lutorm 6y ago
I am also in favor of health care for all, but I'm not necessarily in favor of subsidizing all kinds of reckless behaviors by having the public pick up the hospital bills either. Like, if you want to go, say, base jumping (just picking
233.
by lutorm 6y ago
But the key is that if you're averaging globally, the solar power probably doesn't change much. You'll need a way to transport the energy instead, obviously.
234.
by lutorm 6y ago
"858 additional authors not shown." Particle physics, the field where you can make a difference... ;-)
235.
by lutorm 6y ago
In common language it might not, but in this "FIRE" context, it most certainly does. Arguing that FIRE is misguided because "why would anyone want to sit on their ass for 30 years" is a strawman.
236.
by lutorm 6y ago
Except "retirement" simply means "not having to work to survive". It doesn't mean doing nothing, it means having the freedom to choose to do things that are meaningful to you.
237.
by lutorm 6y ago
Remember that the only reason a laser works for this kind of link is that it is very highly collimated. The light scattering from the receiving satellite is diffuse so the intensity will go down very quickly with distance. It might be obser
238.
by lutorm 6y ago
If you wanted to do this, it's probably a lot easier to intercept the RF to the ground stations.
239.
by lutorm 6y ago
Space to ground is a lot harder than space to space. There is no atmosphere to deal with and in most cases the relative velocity is lower.
240.
by lutorm 6y ago
It is possible to get ITAR authorization without being a US citizen or permanent resident. However, it is a long and arduous process, and even then those employees are restricted from some information. For that reason, it probably won&#x2

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