If you read the chart on that Wikipedia article carefully, the estimated temperature profile is based on data from two Apollo missions.

All of the Apollo missions spent all of their surface time during the lunar morning, relatively early into the 14-day lunar day. They did this partially because the cooling systems couldn’t cope with the full heat of the day, and partially to ensure good backlighting during the landings.

So there is going to be some “diurnal” surface heating and cooling that is probably modeled but not measured.

Your car radiator is actually using convection to convect heat into the air.

The spacecraft radiators use radiation to dump heat by emitting infrared photons. Photons do not require a medium. This type of radiator works by maximizing the area of hot surface exposed to empty space (which has an effective temperature of 3 K). They have to be pointed into a dark area and away from the sun. There’s no advantage to fins, because you want to maximize area perpendicular to the dark sky.

Both devices are called radiators, but they are different kinds of devices.

Solar sail effect is going to be dwarfed by regular atmospheric drag in low earth orbit. At perfect right angles the radiation pressure on the panels is 4.5 micro-Pascals. Meanwhile, in low orbit there’s enough residual atmosphere to generate a dynamic pressure (for drag) of 5 milli-Pascals, give or take (and strongly depending on the space weather).

So atmospheric drag is around 1000 times more than photon pressure. And the drag is big enough to be noticeable over weeks and months, requiring regular boosts to stay in orbit.

You could put em on the moon with a heatpump into the ground.

The interior of the moon is not super cold. You could still run a heat pump, but I don’t know what the conductivity is like.

This ruling confirms that there is no other legal path to obtain that data which isn’t a warrant.

The supreme court ruling doesn’t go this far.

The ruling says that a search occurred when LEOs obtained the geofenced location data from a service provider. The case was sent back down to the circuit court to determine whether or not a warrant was required.

There are various exceptions that allow the government to conduct warrantless searches under the 4th amendment. For example:

• the “frisk” in a Terry stop to search for weapons.
• search with consent
• search incident to arrest
• hot pursuit and exigent circumstance allow police to follow suspects into a place, but not usually to then go looking for stuff.
• searches within the (generous) border zone for border enforcement
• searches at airport security and similar contexts
• public roadway DUI checkpoints and other road safety checkpoints that stop all drivers.

It’s not obvious that any of those apply to this case, but maybe they do. The circuit court will decide.

“You don’t understand; my house ****** is one of the good ones.”

Except the hazard is coming from the park service Barneys and not from the green water. Don’t panic. HEV Mark IV can handle this.

According to this, the charge is vandalism in DC Superior Court. That would be a misdemeanor, carrying less than 1 year in prison.

I wasn’t able to find a case entry in DC Superior Court’s docket system.

Yes. Those dark spots are plains of actually darker rocks, specifically basalts. That generally means that those are dried out lava fields.

To be clear to everyone here: The primary reason why Artemis 3 is not landing is because the billionaire-run Human Landing System contractors are not performing to schedule. The landers are just not ready.

In this test, Artemis 3 will dock with a starship in Earth orbit, but the starship will not even have a cabin interior fitted.

Artemis 3 is going ahead with no landing either. Orbital test only.

It’s pretty common for natural gas electric plants to use Brayton cycle turbines, which is the same thermodynamic cycle that the turbojet engines on airplanes use. But you can optimize the designs on the ground for efficiency (and zero thrust) instead of thrust-to-weight.

It’s also common to use “combined cycle” technology which mashes the Brayton cycle engine together with an older-style steam loop for extra efficiency.

After reading the article, I think they’re just saying they installed some miniaturized natural gas plants. I don’t think they’re literally running aircraft engines on the ground.

Most systems I use will keep a sudo authentication session open for several minutes, so you don’t have to repeatedly enter your password on every single command.

I think the poop bags were mainly stowed into lockers on the sides of the descent module. They’re not just piled up on the ground.

Edit: Correction. This research suggests that the procedure was to “jettison” the “waste receptacle,” containing any sealed poop bags, food wrappers, and other trash. “Jettison” definitely sounds more like tossing stuff out the door.

I also want to point out that maybe 96 bags were provisioned and left. But almost certainly most of those remained empty. Pooping into a bag in the LM in close proximity to your colleague is not an easy or pleasant experience. Astronauts had access to lomotil and they were conditioned on what NASA called a “low residue diet” for the entire duration of the flight and pre-flight quarantine. The early flights were on the surface for less than 24 hours. So there was a lot of opportunity and incentive to just avoid having a bowel movement on the moon.

There’s also a radio transcript from Apollo 16 that suggests that, on that flight, this material was transferred off the returning LM back onto CM and presumably returned to Earth.

Looking at you, China.

But it would still be more expensive, and still have a latency issue.

Imagine a public counterstrike server where there’s an extra 30-50 ms delay between when you hit the strafe key and when you start moving.

Alternatively, Counterstrike or another shooter could defeat wall hacks if the server only told the client about player positions in the client’s line of sight. But then the Counterstrike player executing a peek would see their opponent pop in 30-50 ms after they gain line of sight. Much Counterstrike gameplay is built upon the short interval between when you see someone, and when you click on their head with your hit scan weapon.

Furthermore, latency is not going to go away for Internet play. The speed of light travel time to circumnavigate earth is 125 ms. That gives a theoretical worst case minimum ping of 62.5. Actual pings I see from my ISP are approaching the speed of light order of magnitude, assuming they are only traversing North America.

The traditional rationale, back in the time of the boomer shooters, is that the server doesn’t have enough computational power to update and control the game state for all clients at once, with acceptable latency.

There was at least one “AI” company that was caught passing off the cheap overseas labor as AI.

Well see, they do actually have a list that says what everything costs. It’s called the Charge Master List. They just don’t want you to see that list, because they think it puts you at a negotiating disadvantage. It’s the magic invisible hand of the free market, at work to make pricing information available to all in the most efficient manner. (/s)

This headline sounds like the start of a decent Bond film.