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Nice job!

It's interesting to see how little effect the orbit and rotation had on the straight line. A proposal is to align the numbers for the different movement categories so that it's easier to see the magnitudes of them.

It took me a couple of seconds to understand the concept, from the title I though it was going to be a planner to show gravity assists etc.


Yeah the scale difference is crazy. Once you add the Galaxy/CMB velocity, the earth's rotation basically becomes a rounding error.

Good call on the number alignment. I'm using a variable-width font which makes comparing them messy. I'll switch to monospace or tabular-nums in the next push so the magnitudes scan better.

And fair point on the title-'calculator' implies mission planning. Maybe 'travel visualizer' would have been safer!


> two splashes with light colours

Blood. That's blood.


Does Earth orbit Mercury?


By the astronomical definition of the word "orbit", no. Earth does circle Mercury though (and Mercury circles Earth).

In terms of this post - I suppose technically Earth does NOT circle the Moon, because we never see its back!


Now I had to imagine Mercury's motion in Earth's reference system, and that was painful.


The reason why we don't see satellite-targeting missiles is not because the problem is hard. All relevant actors are capable of that.


All relevant actors are also capable of destroying ground-based data centres, but somehow that's not a huge problem for data centres.


You can take out a data center in space with an accidental collision of a small runaway satellite. Taking out a data center in the middle of Oregon would be significantly harder and will invite massive retaliation.


Have you seen what a moose can do to a car?


Correct me if I'm wrong, but isn't it disputed, with heavy border tensions and all? I'm not claiming India doesn't control it, and as a Swede I don't know much. But that's about the one thing I thought I knew about Kashmir.


Yes, heavily disputed, to the point that there are widespread campaigns on the internet to normalize the various sovereignty claims under the guise of day-to-day conversation about those locales (e.g. conspicuously referring to them as being "in India" or "in Pakistan" or "in China"). For example, see the Google maps reviews for any landmarks in the area.


Wireshark, doo doo doo doo doo doo.



I recently took a cave rope climbing technique course, after being comfortable with rope climbing in other disciplines, such as climbing, rope rescue and glacier rescue.

The bolting techniques used in caves are fucking terrifying. They work, but they are terrifying.


I don't understand, if you are not sure about a two bolt anchor, you can always drill more, rock quality is usually very good. Why do you trust, say an ice axe deadman more than expansion bolts?


I'm specifically thinking about using older self-drive bolts, which seem to still be used if they are placed. I have only met people thinking they are acceptable in the caving environment.

And also using temporary bolts as the Coeur 8 mm, which is rated for 2 kN before deformation in the worst direction (and the mechanism of those bolts are more akin to a cam, making them squiggle a lot in the hole, which is safe, but scary. My ice axe don't squiggle).

Obviously you use redundant bolts, and there are much lower forces in SRT than in dynamic falls, but I still think it's scary as hell.


I recently looked up whether it would be worth it to me to install a water meter instead of paying a flat-rate. Apparently the flat rate is calculated on a consumption of avout half a cubic meter per day. But, without a water meter, I can only guess if my consumption is more or less than that. My guess is that it's considerably less though.


I live in California, where half of the state is a desert half is a rainforest. The politicians here like to think that everyone lives in urban desert cities built on fault lines next to pyrophytic forests, so our regulations assume that every household needs earthquake proofing, fire proofing, thick insulation, and major urban planning.

I live in an area where pretty much non of those things matter, but one of the regulations that stands out the most is that the water everywhere has to be metered, even though the reserviour near me regularly has to be drained, because it's to full to make it through the wet season.

My water districts solution was to set the price per unit of water at cost, so I pay $40/mo for insfrastructure, and a dollar or two for water. If I quadrupled my water consumption, I wouldn't even notice the price change. I actually pay more to service the meters than I pay for water.


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