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Space

Blue Origin Rocket Exploded Thursday Night During Hot-Fire Test (cbsnews.com) 73

Spaceflight Now shared their video of the explosion, which the Orlando Sentinel describes as showing Blue Origin's rocket "become engulfed in flames. The fireball expands out and covers the entire launch pad as the fuselage of the rocket can be seen crumbling into the flames."

Blue Origin founder Jeff Bezos said on X.com "It's too early to know the root cause but we're already working to find it. Very rough day, but we'll rebuild whatever needs rebuilding and get back to flying. It's worth it." (SpaceX founder Elon Musk posted "Sorry to see this, I hope you recover quickly.")

It's unclear how this will impact future launches. "The rocket was destroyed," reports CBS News, "and as the smoke cleared, there was no sign of the erector-gantry used to move the New Glenn from its hangar to the pad and to raise it from horizontal to vertical. Likewise, one of two tall lightning towers was no longer visible." It was the first such on-pad explosion at the Cape since a SpaceX Falcon 9 rocket blew up on nearby pad 40 on Sept. 1, 2016... Blue Origin only has one New Glenn pad, the one that was damaged in the Thursday test. The New Glenn, which has launched three times, is a heavy lift rocket designed to compete head-to-head with SpaceX Falcon 9 and Falcon Heavy rockets. During New Glenn's most recent flight in April, an upper stage malfunction prevented a commercial internet satellite from reaching its planned orbit...

The New Glenn destroyed Thursday was to send 48 Leo internet satellites owned by Amazon into space [which were not on board for the hot-fire test]

Blue Origin posted on X.com that "Debris from our recent hotfire anomaly may wash ashore in the coming days/weeks. If you encounter any debris, do not touch or approach it for your safety."

"Spaceflight is unforgiving, and developing new heavy-lift launch capability is extraordinarily difficult..." NASA Administrator Jared Isaacman posted on X.com. "âWe will provide information on any impacts to the Artemis and Moon Base programs as it becomes available."

Thanks to long-time Slashdot reader symbolset for sharing the news.
Science

Scientists Found a Way To Cool Quantum Computers Using Noise (sciencedaily.com) 7

Slashdot reader alternative_right writes: Quantum computers need extreme cold to work, but the very systems that keep them cold also create noise that can destroy fragile quantum information. Scientists in Sweden have now flipped that problem on its head by building a tiny quantum refrigerator that actually uses noise to drive cooling instead of fighting it. By carefully steering heat at unimaginably small scales, the device can act as a refrigerator, heat engine, or energy amplifier inside quantum circuits.

Comment Re:Random Number Machine (Score 1) 84

>But in a good model, esp. a thinking model, one
>would expect it to think over which sorts of
>numbers are statistically over-chosen (birthdates,
>etc) and avoid them in giving its answers.

and even then, it doesn't affect the chance of *winning*, but rather the chance of being the *sole* winner, as opposed to having to share the price.

[there *is* another possibility, though, albeit unlikely: it could come across a flaw in the RNG that lets it avoid less likely combinations, or choose a more likely one. Again, though, this requires an RNG flaw.]

Comment Re:Make them occasionally? (Score 1) 186

>Mexico has a half peso coin, worth about 2 cents.

and a peso was like a dollar.

I recall my aunt feeling guilty about what she was paying down there when it dropped to about eight to a dollar.

And then they lopped three zeroes off to get the new peso.

I *think* this is half of those one-thousands of the prior peso . . .

After extreme inflation, small matters of rounding aren't even on the radar for what's important.

[Let alone the 27 or so zeroes lopped off in Germany {where, near the end, workers were reportedly paid twice a day, with their wives bringing wheelbarrows to collect, and rushing to spend it before it fell further! (which may be an urban legend; I've never been able to confirm it, but it's not inconsistent with the daily inflation)}. Or Yugoslavia, which lopped off 30 digits . . . ]

Comment Re:Also (Score 1) 48

bah.

Let me know when they start making *autographic* 120 film again. I have the camera, and am dying to shoot a roll!

The last rolls were apparently made in 1932. The cameras had a flap that could flip up and allow writing directly onto the film with a stylus. When you see handwriting on an old picture print, it was likely shot on autographic.

[and, yes, in fact my autographic camera *does* have bellows!]

Comment not really electrolux (Score 1) 123

That Electrolux isn't really an Electrolux.

a couple of decades ago, in one of those weird corporate maneuvers, it sold the name, and now sells its vacuums under another name, while the buyer sells non-electrolux as Electrolux.

So what she knows of Electrolux from the late 20th and early 21st centuries no longer applies.

But, yes, they were very good and lasted forever. Also extremely pricey.

Privacy

Manufacturer Remotely Bricks Smart Vacuum After Its Owner Blocked It From Collecting Data (tomshardware.com) 123

"An engineer got curious about how his iLife A11 smart vacuum worked and monitored the network traffic coming from the device," writes Tom's Hardware.

"That's when he noticed it was constantly sending logs and telemetry data to the manufacturer — something he hadn't consented to." The user, Harishankar, decided to block the telemetry servers' IP addresses on his network, while keeping the firmware and OTA servers open. While his smart gadget worked for a while, it just refused to turn on soon after... He sent it to the service center multiple times, wherein the technicians would turn it on and see nothing wrong with the vacuum. When they returned it to him, it would work for a few days and then fail to boot again... [H]e decided to disassemble the thing to determine what killed it and to see if he could get it working again...

[He discovered] a GD32F103 microcontroller to manage its plethora of sensors, including Lidar, gyroscopes, and encoders. He created PCB connectors and wrote Python scripts to control them with a computer, presumably to test each piece individually and identify what went wrong. From there, he built a Raspberry Pi joystick to manually drive the vacuum, proving that there was nothing wrong with the hardware. From this, he looked at its software and operating system, and that's where he discovered the dark truth: his smart vacuum was a security nightmare and a black hole for his personal data.

First of all, it's Android Debug Bridge, which gives him full root access to the vacuum, wasn't protected by any kind of password or encryption. The manufacturer added a makeshift security protocol by omitting a crucial file, which caused it to disconnect soon after booting, but Harishankar easily bypassed it. He then discovered that it used Google Cartographer to build a live 3D map of his home. This isn't unusual, by far. After all, it's a smart vacuum, and it needs that data to navigate around his home. However, the concerning thing is that it was sending off all this data to the manufacturer's server. It makes sense for the device to send this data to the manufacturer, as its onboard SoC is nowhere near powerful enough to process all that data. However, it seems that iLife did not clear this with its customers.

Furthermore, the engineer made one disturbing discovery — deep in the logs of his non-functioning smart vacuum, he found a command with a timestamp that matched exactly the time the gadget stopped working. This was clearly a kill command, and after he reversed it and rebooted the appliance, it roared back to life.

Thanks to long-time Slashdot reader registrations_suck for sharing the article.

Comment Re:A word of warning about "roof paint" (Score 1) 52

We had to have our entire roof reshingled after a particularly bad storm.

It turns out that of the various colors, the lightest (or 2?) was actually energy star rated. So we took it.

It turned out to be worth about 2F inside as compared to the prior black shingles.

We got another 2F when we replaced the swamp cooler--the newer model had an 18" pad instead of 12".

Between the roof and the bigger pads, we only had a single non-monsoon season day where we had to switch over to AC this summer--in Las Vegas!

(I'm going to miss the swamp cooler when we move, but they're apparently not allowed in new construction. I have no idea when the cutoff was)

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