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21st April 2023, 09:56 | #481 |
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Well, as they say, all data is good data.
I'm no rocket scientist, but it looks like the decision not to do a flame diversion tunnel under the launch mount may have contributed to this. Seems up to nearly 20% of the engines weren't firing during ascent, possibly due to damage from blown back concrete - the crater under the launch mount is showing a fair bit of exposed dirt - so all of the re-enforced concrete was ablated. That may have led to engine and hydraulic damage resulting in the yellow flames - methane is supposed to burn cleanish with a nice pink purple flame. And I think this was the last to use hydraulic steering - the newer model have electric, so something less to get damaged (The hydraulics are housed on the outside under the squarish sections on the lower half of the booster - susceptible to concrete blowback I think). That doesn't explain why it didn't separate though - unless the software got mixed up. Seems like it may have started the flip prior to boost back without disconnecting stage-2, which left it tumbling uncontrollably. Very successful test of the Flight Termination System though, so there is that... |
21st April 2023, 12:47 | #482 |
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Yeah there were some huge chunks of something solid flying up into the air when the rocket was still on the ground. Impressive it was able to flip a number of times at speed while the whole stack was together. Also impressive was that it was able to maintain attitude with so many engines failed/failing. At least the rocket structure looks robust.
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21st April 2023, 14:30 | #483 |
A mariachi ogre snorkel
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I'd be pretty annoyed if I were a SpaceX engineer and been bullied into testing prematurely just because Elon wanted a win on "4/20"
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20th May 2023, 13:31 | #484 |
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Some science history:
The 1969 Apollo Guidance Computer Succinct video about how the Apollo Guidance Computer functioned, how the astronauts used it, the hardware bug that manifested during the moon landing and how the system recovered and was able to keep the lander flying.
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20th May 2023, 17:05 | #485 |
Stuff
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Have watched similar through: https://www.youtube.com/@CuriousMarc/videos
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21st May 2023, 18:50 | #486 |
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I like the one where the guys found the remaining versions and wired them together over a few weekends in a hotel room.
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22nd May 2023, 07:51 | #487 |
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28th May 2023, 14:52 | #488 |
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29th May 2023, 07:26 | #489 |
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The Twitter comments - ughhh. I liked it better when the Internet was stuck in academia and you had to build your own PPP stack to make it work.
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29th May 2023, 09:59 | #490 |
*flex*
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That's a neat picture. I do wonder what that building/structure is in 3rd crater to the right, and why does it have a shadow like it's a huge mast/attenna?
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29th May 2023, 14:12 | #491 |
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Given it's the moon and billions stare at it nightly I bet you can find those particular features described ad nauseam should you look.
It is a great pic, right? Like echoes of a future that might await us.
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31st May 2023, 15:02 | #492 |
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New record! 17 people are in Earth orbit at the same time right now
https://whoisinspace.com/ (Also how many toilets in space and robots exploring space.)
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31st May 2023, 19:21 | #493 |
HENCE WHY FOREVER ALONE
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Now only 13. That was short-lived.
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31st May 2023, 19:48 | #494 |
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...and no love for Voyager2?
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31st May 2023, 19:52 | #495 | |
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Quote:
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1st June 2023, 21:09 | #496 |
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6th June 2023, 15:59 | #497 | |
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James Webb Space Telescope spies earliest complex organic molecules in the universe
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6th June 2023, 16:00 | #498 |
A mariachi ogre snorkel
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the fuuuuuck
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6th June 2023, 16:30 | #499 | |
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So much that's cool in that article.
Like this: Quote:
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10th June 2023, 20:53 | #500 |
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17th June 2023, 14:08 | #501 |
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A white supremacist took MDMA for a study, and it snapped him out of his beliefs: 'Why am I doing this?'
So much great progress in therapeutic psychedelic studies.
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20th June 2023, 16:55 | #502 |
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20th June 2023, 17:30 | #503 |
A mariachi ogre snorkel
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Yeah, I saw that this morning myself. Two quick reactions:
1. Scientific American, lol, fuck 'em. The "Scientific" in the name is as meaningful as commentary on Ukraine in an RNZ news article. I'm not bitter, you're bitter. 2. Our planetary system is quasi-ordered - Earth is bigger than Mars, Jupiter is bigger than Saturn, Uranus is bigger than Neptune, and we've got a massive chaotic pile of jumbled shit smack in the middle of our system. In fact the absence of a mention in the article of our asteroid belt seems to me to be a glaring omission. 3. We would be so fucked without Jupiter. The inner planets would get smashed by meteor/comet/asteroid impacts every second year if Jupiter's gravity well were not on base defense for us. |
21st June 2023, 07:19 | #504 |
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I think the fact that we can make such a survey and draw data from it is pretty awesome. Although I do wonder about the sample size - how many multi planetary systems has Kepler found?
Maybe that's the problem - we can't really see and collate the data that well except for the ones that trigger the "Similar" catergory, and systems like ours are harder to detect from afar, and may well be more populous. JWT to the rescue! /Google... Oh - holy shit, 859. Ok - maybe it's not as bad as I thought. Seems systems with 3 detected are most prevalent though. |
21st June 2023, 14:39 | #505 | ||
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Quote:
Quote:
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21st June 2023, 16:06 | #506 | |
A mariachi ogre snorkel
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Quote:
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28th June 2023, 17:04 | #507 | |
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Quote:
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28th June 2023, 19:14 | #508 | |
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Certain segments of the science industry are very excited about an upcoming announcement.
Quote:
https://nanograv.org/news/2023Announcement
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28th June 2023, 23:46 | #509 |
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Oh, very cool. What have they found in the deep?
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30th June 2023, 02:34 | #510 | |
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Scientists have finally ‘heard’ the chorus of gravitational waves that ripple through the universe
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30th June 2023, 09:41 | #511 |
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It's Nobel Prize level stuff.
It's an entirely new field of gravitational wave astrophysics being created here. Using pulsars as gravitational wave detectors seems so far fetched, but it's now proven to be possible.
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30th June 2023, 12:33 | #512 |
A mariachi ogre snorkel
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This is some insane shit.
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30th June 2023, 13:39 | #513 |
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Forget outside the box thinking - that stuff is outside the solar system!
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30th June 2023, 13:49 | #514 |
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Wavelengths with periods of years is pretty intense.
Looking forward to seeing the maps of objects they put together once there's a bunch of these online, now the method is demonstrated.
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30th June 2023, 14:26 | #515 |
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They used Arecibo
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30th June 2023, 14:29 | #516 |
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Oof.
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30th June 2023, 16:29 | #517 | |
A mariachi ogre snorkel
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Quote:
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4th July 2023, 13:38 | #518 |
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4th July 2023, 13:44 | #519 | |
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Quote:
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28th September 2023, 16:24 | #520 | |
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Antimatter falls down, not up: CERN experiment confirms theory
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