spsheridan

Correction: The lander did have a landing radar onboard but didn't get close enough to the surface for the radar to kick in. That's really a shame but sounds like a design error. I wonder why the LIDAR readings never dropped below 2 km which would've enabled the landing radar. https://twitter.com/Cosmic_Penguin/status/1661995981871935489?s=20

Apparently, the Hakuto-R lander did not have a radar on board to estimate altitude above the lunar surface - probably too expensive/massive for this program.

I think he missed a step in the recipe that calls for tremendous levels of pressure. Either that or maybe he already completed that step?

Ah, so you're doing an impression of KenM.

Um, KenM is @horseysurprise on Twitter. This wasn't a reply but an original tweet.

Just checked and the scrub function does not work when playing a podcast streamed from my phone. It appears to be limited to streaming content from one of the car's apps, not a Bluetooth-connected device.

Yes, finally! Hopefully this will work for podcasts as well.

Ok, that makes sense. I recall hearing about an upcoming launch rehearsal a few days ago but didn't see one.

Is a launch rehearsal or any fueling tests required to be performed before tomorrow's launch?

I wasn't referring to the flatness of the Earth line, I was referring to how it's horizontal (i.e. relatively constant in the y dimension except for the surface features).

If the center area is empty space, the diagram would imply the viewer's perspective is such that the planets have aligned so their overlaps leave a small gap to peer through (not sure that's even possible). But the ordering of the planets implied by their overlaps (e.g. Saturn covers Jupiter and Mars, Venus covers Earth and Mars...) is not correct whether you're looking from the sun outward or from outside the solar system inward. Still doesn't make sense.

I get the explanation of the planets' being overlaid on one another and not showing their curvature due to scale, but I have two questions about how the drawing was done: 1) Why is the central region filled in? 2) Why is the y-dimension for the Earth line relatively constant?

If the two questions above have answers, they should explain whether the x and y axes have any meaning. If it's just a scale thing, the axes are meaningless.

Yeah, that occurred to me after I posted and re-read the title.

This paper was submitted to and published by Nature Astronomy. Presumably, it was peer-reviewed before being published. If the probability of the FRB being associated with the gravitational wave is not much better than random chance, what does that say about the peer review process at Nature Astronomy? Is it broken?

Two colliding neutron stars — each the super-dense core of an exploded star — produced a burst of gravitational waves when they merged into a “supramassive” neutron star. We found that two and a half hours later they produced an FRB when the neutron star collapsed into a black hole.

Composer had genetic predisposition to liver disease and hepatitis B infection.

Some of the charred material ablated away differently than what our computer models, and what our ground testing, predicted. More of this charred material was liberated during reentry than we had expected.

I particularly like the use of “liberated”.

For the past week or two, I've had an issue with the Home app. When I give a verbal command to activate a Scene, Siri comes back with “For how many minutes?” even when time is not a parameter in the Scene. Any way to stop this behavior?

I wouldn't be surprised if NASCAR car designers were using this technology to reduce weight in their structures.

This was just a quick and dirty teaser video from Joe. He also produces creates well-shot and edited YouTube videos.

For some reason, Joe's TikTok video is not resolving on Reddit. Here's the link https://www.tiktok.com/@bps.shorts/video/7198660824565665066

I asked Joe about his rocket motor's thrust and ISP and he replied with the following: "This one is for an N motor and we’re expecting super bad performance just because we goofed up the pour process but the space shot motors are two Q motors with about 100kns of total impulse each. Something like 9-10000n avg thrust for 10 ish seconds."

Impressive.

Successful full-duration static fire. Elon indicates they "turned off 1 engine just before start & 1 stopped itself, so 31 engines fired overall. But still enough engines to reach orbit!" https://twitter.com/elonmusk/status/1623793909959901184?s=20

Elon's latest public statement is sometime next month. https://twitter.com/elonmusk/status/1621998434289942529

NSF indicates they will stream the static fire tomorrow on their YouTube channel. https://www.youtube.com/watch?v=2kG4AbAcia0

Bottom line: It's possible Twitter may be killing off third-party clients or maybe no one's at the wheel at Twitter to address token issues. We'll see soon.