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    The Orbital Index

    orbitalindex.com · Publication · on HN since 2019

    Two friends run a weekly space newsletter covering industry news, with occasional deep dives; it has since ended.

    Visit blogHN submissions
    SpaceScienceTech Industry
    What HN says

    Commenters call it their favorite space newsletter, praising its dense news and deep dives on recent topics, and recommend it to anyone interested in space.

    Stats for nerds
    28HN people shared it
    220linked in comments
    2Kstory points
    Oct 2025last shared
    2019people per year2025

    Top posts on HN

    1. 1
      DARPA moving forward with nuclear thermal engine design
      2 people · 215 points · first shared 2022 · 104 comments on HN
    2. 2
      So, you want to build a CubeSat?
      1 person · 215 points · first shared 2019 · 69 comments on HN
    3. 3
      Four Mars missions are launching next year
      1 person · 192 points · first shared 2019 · 70 comments on HN
    4. 4
      The first on-orbit fuel depot has been deployed
      1 person · 174 points · first shared 2021 · 51 comments on HN
    5. 5
      SpaceX exploring mission to boost Hubble
      1 person · 169 points · first shared 2022 · 162 comments on HN
    6. 6
      How to Make a CubeSat
      1 person · 120 points · first shared 2022 · 55 comments on HN
    7. 7
      CubeSat interplanetary exploration is heating up
      2 people · 102 points · first shared 2020 · 25 comments on HN
    8. 8
      There are many small orbital launch vehicles proposed or under development
      1 person · 90 points · first shared 2019 · 39 comments on HN
    9. 9
      The Quest for a Fusion Drive
      1 person · 83 points · first shared 2022 · 45 comments on HN
    10. 10
      Magnetoplasma drive could make Mars transit take 39 days?
      1 person · 65 points · first shared 2020 · 88 comments on HN

    What HN people wrote when they linked it

    • syocFeb 2021

      > Ingenuity runs Linux (for the first time on Mars) and uses the open-source F' software framework on a 2.26 GHz quad-core Snapdragon 801 processor. Radiation hardened processors aren’t fast enough for the real-time vision requirements of the experiment—but as an unprotected COTS processor, it will fail periodically due to radiation-induced bit flips, possibly as much as every few minutes. NASA’s solution is to use a radiation-tolerant FPGA ProASIC3 to keep an eye on the CPU (paper) and software that attempts to double-check operations as much as possible. “[I]f any difference is detected they simply reboot. Ingenuity will start to fall out of the sky, but it can go through a full reboot and come back online in a few hundred milliseconds to continue flying.”

      Source: https://orbitalindex.com/archive/2021-02-24-Issue-105/#ingenuity

    • dangFeb 2022

      That's because HN's software replaces URLs with canonical URLs when it finds one, and the submitted page includes https://orbitalindex.com/archive/2022-02-16-Issue-156/ as a canonical URL.

      In this case, though, the author's own source is more in keeping with the HN guidelines ("Please submit the original source. If a post reports on something found on another site, submit the latter.") so I've replaced the URL above with that one. Thanks!

      https://news.ycombinator.com/newsguidelines.html

    • austinlAug 2023

      Reminds me that SpaceX has now landed rocket boosters successfully over 200 times. Landing just a single rocket was huge news a few years ago.

      The US is launching things into space about 20 times as frequently compared to 10 years ago [1]. Now, most rocket launches don't make mainstream news—I only keep up with things by subscribing to a niche newsletter [2].

      [1] https://ourworldindata.org/grapher/yearly-number-of-objects-launched-into-outer-space

      [2] https://orbitalindex.com

    • alchemistmaxJul 2021

      Cheers! Thank you!

      https://orbitalindex.com/ is an amazing resource.

      https://jatan.space/ is another that I follow.

      Payload Research newsletter rocks too: https://mailchi.mp/payloadresearch/bezos-leaves-earth?e=e515a5a900

      There's even a Slack bot to be notified of launches (most of which you don't hear about on the news): https://groundcontrolbot.space/

    • _MicroftJun 2020

      Bug report for https://orbitalindex.com/ :

      In desktop Firefox 77.0.1, the page can be scrolled (i.e. the scrollbar is moving) for pages without anything happening. It took me a moment to notice that a content section can be pulled in from the right side. Disabling sanity-saving addons (ad-/tracking blockers) did not make a difference.

    • nanomonkeyOct 2022

      The Orbital Index [https://orbitalindex.com] for space related stuff.

      The Prepared [https://theprepared.org/] for engineering discussions.

      The Convivial Society [https://theconvivialsociety.substack.com] for discussions about technology and societies intersections, and the good life, with a focus on the works of Ivan Illich.

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