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paul0207 paul0207 @lemmy.sdf.org

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Posts 14
Comments 14

"How I Found A 55 Year Old Bug In The First Lunar Lander Game" by Martin C. Martin

martincmartin.com How I Found A 55 Year Old Bug In The First Lunar Lander Game

Just months after Neil Armstrong’s historic moonwalk, Jim Storer, a Lexington High School student in Massachusetts, wrote the first Lunar Landing game. By 1973, it had become “by far an…

How I Found A 55 Year Old Bug In The First Lunar Lander Game

cross-posted from: https://lemmy.sdf.org/post/18298626

> "I recently explored the optimal fuel burn schedule to land as gently as possible and with maximum remaining fuel. Surprisingly, the theoretical best strategy didn’t work. The game falsely thinks the lander doesn’t touch down on the surface when in fact it does. Digging in, I was amazed by the sophisticated physics and numerical computing in the game. Eventually I found a bug: a missing “divide by two” that had seemingly gone unnoticed for nearly 55 years."

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"How I Found A 55 Year Old Bug In The First Lunar Lander Game" by Martin C. Martin

martincmartin.com How I Found A 55 Year Old Bug In The First Lunar Lander Game

Just months after Neil Armstrong’s historic moonwalk, Jim Storer, a Lexington High School student in Massachusetts, wrote the first Lunar Landing game. By 1973, it had become “by far an…

How I Found A 55 Year Old Bug In The First Lunar Lander Game

"I recently explored the optimal fuel burn schedule to land as gently as possible and with maximum remaining fuel. Surprisingly, the theoretical best strategy didn’t work. The game falsely thinks the lander doesn’t touch down on the surface when in fact it does. Digging in, I was amazed by the sophisticated physics and numerical computing in the game. Eventually I found a bug: a missing “divide by two” that had seemingly gone unnoticed for nearly 55 years."

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www.quantamagazine.org Insects and Other Animals Have Consciousness, Experts Declare | Quanta Magazine

A group of prominent biologists and philosophers announced a new consensus: There’s “a realistic possibility” that insects, octopuses, crustaceans, fish and other overlooked animals experience consciousness.

Insects and Other Animals Have Consciousness, Experts Declare | Quanta Magazine

An interesting read. "A group of prominent biologists and philosophers announced a new consensus: There’s “a realistic possibility” that insects, octopuses, crustaceans, fish and other overlooked animals experience consciousness." https://www.quantamagazine.org/insects-and-other-animals-have-consciousness-experts-declare-20240419/

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skyandtelescope.org How Venus Ended Up with a Mini-Moon Named Zoozve

Thanks to some misread handwriting, a temporary mini-moon of Venus has just been bestowed with an unusual name.

How Venus Ended Up with a Mini-Moon Named Zoozve

A quasi-satellite of Venus has just received an unusual name.

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Auditions Notice - 5 short films - Planet Ant

Midwest Noir, Plague Doctor, Metro General: The Audit, A Rainy Conclusion, Used Car

Each project is a one day production plus 2 or 3 online meetings. To be shot on a SAT or SUN in February or March - (To Be Determined) These projects will have a premiere event at Planet Ant and be featured on our socials. These are unpaid roles

https://www.eventbrite.com/e/auditions-planet-ant-film-class-5-student-projects-tickets-766562618427

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Help with more accurate rising setting and transit calculation for moon
  • Hello, are you accounting for parallax and for atmospheric refraction?

  • In 1952, a group of three 'stars' vanished—astronomers still can't find them

    cross-posted from: https://lemmy.sdf.org/post/6593278

    > On July 19, 1952, Palomar Observatory was undertaking a photographic survey of the night sky. Part of the project was to take multiple images of the same region of sky, to help identify things such as asteroids. At around 8:52 that evening a photographic plate captured the light of three stars clustered together. At a magnitude of 15, they were reasonably bright in the image. At 9:45 pm the same region of sky was captured again, but this time the three stars were nowhere to be seen. In less than an hour they had completely vanished.

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    In 1952, a group of three 'stars' vanished—astronomers still can't find them

    On July 19, 1952, Palomar Observatory was undertaking a photographic survey of the night sky. Part of the project was to take multiple images of the same region of sky, to help identify things such as asteroids. At around 8:52 that evening a photographic plate captured the light of three stars clustered together. At a magnitude of 15, they were reasonably bright in the image. At 9:45 pm the same region of sky was captured again, but this time the three stars were nowhere to be seen. In less than an hour they had completely vanished.

    6
    www.metrotimes.com Eastside Detroit’s Next Chapter Books finds permanent home

    The bookstore’s brick-and-mortar is a block from the Alger Theater, where it previously ran as a pop-up

    Eastside Detroit’s Next Chapter Books finds permanent home

    The bookstore’s brick-and-mortar is a block from the Alger Theater, where it previously ran as a pop-up

    0
    Mute Swans with Cygnets - Point Pelee, ON
  • Thanks for the pic, that's the most Southern point of Canada, right?

  • IMAX 70mm in Detroit & Grand Rapids
  • I just got my ticket for Detroit as they added some days in August. For anyone interested check out here: https://buy.acmeticketing.com/orders/469/calendar?eventId=6478a8173f77a80bb4388234&cart

    They will sell fast!

  • IMAX 70mm in Detroit & Grand Rapids

    Has anyone seen it in these locations? Or planning? The IMAX Dome Theatre in Detroit is already sold out.

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    Are there Christian movies other than Prince of Egypt that are considered good?
  • I really liked “Of Gods and Men” (2010) which is about the life of 8 French Trappist monks in Algeria during 1996.

  • Mental illnes of former teacher
  • What a sad story, thank you for sharing it.

  • Some Squirmy Stowaways Got to the Arctic. And They Like It There.

    https://news.yahoo.com/squirmy-stowaways-got-arctic-113428035.html

    2
    Hello Apple enthusiasts, I need your assistance for a little
  • Ventura 13.4.1, I ran the benchmark again and got 3660, minimal or negligible stutter noticed with the playing card signs. I guess I will be contacting Apple Care soon regarding this.

  • Hello Apple enthusiasts, I need your assistance for a little
  • M1 Max here, 32-core GPU, Safari 16.5.1

  • *Permanently Deleted*
  • Great! Línea A used to have beautiful working vintage wagons but I don’t think this is the case anymore.

  • The northern lights are coming to several states this week. Here's how to see them.
  • The Aurora Forecast app (https://www.jrustonapps.com/apps/my-aurora-forecast) has a Kp prediction index for your location. I lived many years in Interior Alaska so I was fortunate to see them a lot. Here in Michigan I guess the best chances are in the UP area.

  • Best Firefox Extensions?
  • I agree, also there is the risk of installing a malicious add-on, specially if it is not hosted by Mozilla.

  • Best Firefox Extensions?
  • I will check them out, thanks.

  • Best Firefox Extensions?
    • Bypass Paywalls Clean
    • Copy PlainText
    • Easy Youtube Video Downloader Express
    • Feedbro
    • Flagfox
    • FoxClocks
    • Grammar Checker & Paraphraser – LanguageTool
    • Library Extension
    • OneTab
    • Print Edit WE
    • Resurrect Pages
    • Search by Image
    • The Camelizer
    • uBlock Origin
    • Unhook - Remove YouTube Recommended Videos
    • Video DownloadHelper
  • hello midwesties
  • Howdy! East Detroit here 😀

  • hello midwesties
  • Hello from Detroit, just in front of Canada. I love Swedish culture and its nordic noir series, perhaps my favorite is Wallander with K. Henriksson.