jccooper

You don't need to do any of that. You just hit the brake, which overrides acceleration. For this particular problem, drive-by-wire is superior to those mechanical controls.

The later structures are suggested to be funerary. The oldest one (with the lobes) is unknown. From the aerial photo, it seems they haven't dug the interior.

They mention a gravel layer in the ditch which suggests a palisade. I'm not quite sure how they get there (I don't see the actual report), but presumably they have some basis. As a fenced enclosure, it seems to small for livestock, but perhaps a fortified homestead.

Perhaps a fort with a couple of additions.

> They failed because of the basic economics of EV rentals: maintenance costs and depreciation

That sounds like a Tesla problem, not an EV problem.

There's no particular need for body work on an EV to be particularly expensive, and the depreciation issue is from Tesla changing their new prices.

Travelers are in a particularly poor position for charging. You're on a schedule, you don't have the accounts, you don't know where things are, you don't know how the car works, etc. But your latter group is a fine match for an EV. I'm not going to do 300 miles driving from the airport to the convention hotel and back. As long as you don't have to charge it before you bring it back, there's no problem.

I've done this before. Different country, car brand I've never seen, never even charged a car before. But my travel itinerary was less than the range, and it was fine. (I tried for fun to charge in a garage in Bruges; could not figure it out. Good thing I didn't need to.)

It's not appropriate for every rental, and there's some customer information and education requirements that are new because of that, but it's quite plausible to have a decent portion of a rental fleet be electric.

The world worked fine before 1908-1967 when DST was introduced.

That requires imaginative ideas for paying for such missions.

A small number of months from now, it would seem.

Pis are expensive? A Pi 4 and all accessories is about $100. Where am I going to do better? Every time someone says this I go look at NUCs and other minis and I don't see anything cheaper.

Well, it's a service for banks that will allow them to offer their customers realtime transfers between banks. Just like ACH. I don't use ACH directly, but I do use it through my bank all the time.

Thrust to weight of a nuclear engine is fairly poor, so they are best suited for upper stage or in-space work. A heavy-planet rocket might use chemical propulsion in a lower stage just like we do and a high-energy nuclear upper stage (or two) where the really high Isp would be quite useful.

Alfred was styled "King of the Anglo-Saxons"; his grandson and (indirect) successor Æthelstan was first styled "King of the English". The same kingdom was taken by William I, who also styled himself "King of the English", as would be common amongst the Normans until John.

While Alfred may have borne a different title, he held the same office as the (later) Kings of England.

I suspect Apollo spent a great deal more money in quality assurance than this $120 million-ish project.

Yep. Basic rigging procedures would have prevented this several ways.

If you know GPS is unreliable in specific areas, it's not hard to get around with rough accuracy. There's still a compass, after all.

Almost any filter will handle cat hair. You probably want to find something with a washable pre-filter (usually a stretch fabric) so you don't waste the expensive actual filter.

If that's your only concern, a t-shirt over a box fan will probably do the job.

This article is looking at "apps" on the consumer side. While not an excuse for being as terrible as it is, consumer shipping is not where the money or focus is in package delivery.

Tolkien would have had at least a pretty good instinct for the feel of the post-Roman world as he was heavily exposed to primary sources... and lived in the turn-of-the-century English countryside, which would have still felt recognizably pre-modern.

Many subsequent authors will have only seen modern or American or no countryside at all and get their impressions of "the middle ages" from a mostly-fictional cultural pastiche of Tolkien (who was really writing a Late Antique world), Dungeons and Dragons, Monty Python, etc. so it's no surprise their worlds are rather implausible.

Seems that the Earth's shadow is 1.4 million km, and the Hill radius around 1.5 million. That ratio won't be the same for different size planets, as they scale differently with mass, but I doubt you'll get eclipses in any plausible configuration.

Yes. Deliberately. While not explicitly against the guidelines, jokes are generally considered to not contribute to the conversation.

At certain phases. It will not have enough thrust to survive that at low speed/altitude.

AFTS activation indicates deviation from planned trajectory. It's unusual, being so late in the burn.

Could be a guidance issue, but SpaceX should be pretty good at that by now. Could be engine underperformance, but we got nominal callouts and it would have to be pretty bad for AFTS to notice with minutes left, so that seems unlikely.

I'd guess engine control (due to damage during staging) is the main suspect. We say the thrusters fighting pretty hard there at the end, which supports that idea.

European Delivery Program. https://www.internationalbmw.com/european-delivery-program2....

I would be shocked if it were measurable. The launch is 5 miles away and the breeze blows inland.

You won't be able to park at the park anytime near the launch; it will be full. But you can just walk down the beach to the jetty from anywhere else on the island.

If the restaurant takes a name and checks on arrival, a third party can not reserve in advance and resell.

A bomb truck is a cost-effective way to get cruise missiles and such in range from safer out-of-theater air bases. Making it survivable in a contested environment (stealth) opens up lots more mission profiles and lets you use even cheaper munitions like glide bombs and guided bombs, which is especially helpful in a protracted conflict. Plus it requires less escort.

A bomber isn't cheap, but it is cheaper than lots of ICBMs. And, in many cases, than multi-role fighters and/or cruise missiles.

999999999 was on Sept 9, 2001

Looting was in large part the payment for soldiering. Whomever raised the army might pay a bit regularly for maintenance, but all the real money was in the spoils, and everyone involved knew it. Many is the army that failed to destroy a defeated foe because the victorious soldiers mostly wanted to loot the enemy camp.

Notable that the Edison houses aren't form-cast like we do today, which is just structural and rather rough; the concrete was meant to be the finished wall both interior and exterior, including the roof and all interior and exterior ornament. The forms were nickel-plated cast iron.

https://www.scientificamerican.com/article/edisons-system-of...