GNU social JP
  • FAQ
  • Login
GNU social JPは日本のGNU socialサーバーです。
Usage/ToS/admin/test/Pleroma FE
  • Public

    • Public
    • Network
    • Groups
    • Featured
    • Popular
    • People

Conversation

Notices

  1. Embed this notice
    Corey S Powell (coreyspowell@mastodon.social)'s status on Tuesday, 25-Jun-2024 06:01:57 JST Corey S Powell Corey S Powell

    NASA's Parker Solar Probe has set a new record as the fastest object ever built, hitting a velocity of 394,736 mph (635,266 kph) relative to the Sun.

    That's about 300 times as fast as a speeding bullet. Damn!
    https://parkersolarprobe.jhuapl.edu/News-Center/Show-Article.php?articleID=193 #NASA #space #science

    In conversation about 11 months ago from mastodon.social permalink

    Attachments


    1. Domain not in remote thumbnail source whitelist: parkersolarprobe.jhuapl.edu
      For the Record: Parker Solar Probe Sets Distance, Speed Marks on 17th Swing by the Sun
      from @jhuapl
      NASA’s Parker Solar Probe completed its 17th close approach to the Sun on Sept. 27, breaking its own distance record by skimming just 4.51 million miles (7.26 million kilometers) of the solar surface. Set up by gravity-assist flyby of Venus on Aug.
    • clacke likes this.
    • Embed this notice
      Corey S Powell (coreyspowell@mastodon.social)'s status on Tuesday, 25-Jun-2024 06:01:56 JST Corey S Powell Corey S Powell
      in reply to

      For a dose of perspective: Even at the peak speed of the Parker Solar Probe (~180 km/sec), it would take more than 7,000 years to reach Alpha Centauri, the nearest star system.

      Interstellar distances are HUGE.
      #space #science #travel

      In conversation about 11 months ago permalink

      Attachments


      1. https://files.mastodon.social/media_attachments/files/111/319/774/378/407/619/original/3578673db4a01c05.jpg
      clacke likes this.
    • Embed this notice
      Corey S Powell (coreyspowell@mastodon.social)'s status on Tuesday, 25-Jun-2024 06:01:57 JST Corey S Powell Corey S Powell
      in reply to

      Working in tandem, NASA's Parker Solar Probe and ESA's Solar Orbiter are making big discoveries about how the Sun works.
      One particularly intriguing observation: a strange plasma "snake" slithering all the way across the solar surface.
      https://www.nature.com/articles/d41586-023-03301-1 #astronomy #astrodon #science

      In conversation about 11 months ago permalink

      Attachments


      1. Domain not in remote thumbnail source whitelist: media.nature.com
        Staring at the Sun — close-up images from space rewrite solar science
        from Witze, Alexandra
        Researchers have never had such detailed views of our nearest star.
    • Embed this notice
      Benjamin Geer (benjamingeer@zirk.us)'s status on Tuesday, 25-Jun-2024 06:02:14 JST Benjamin Geer Benjamin Geer
      in reply to

      @coreyspowell 0.06% of the speed of light! Are there any interesting relativistic effects?

      In conversation about 11 months ago permalink
      clacke likes this.
    • Embed this notice
      Debbie Goldsmith 🏳️‍⚧️🏳️‍🌈⧖ (dgoldsmith@mastodon.social)'s status on Tuesday, 25-Jun-2024 06:02:19 JST Debbie Goldsmith 🏳️‍⚧️🏳️‍🌈⧖ Debbie Goldsmith 🏳️‍⚧️🏳️‍🌈⧖
      in reply to
      • Benjamin Geer

      @benjamingeer @coreyspowell Not really (if I did my math right). That corresponds to its clock running about 5.5s per year slower than an observer at rest. Still, they probably need to take it into account in the software.

      In conversation about 11 months ago permalink
      clacke likes this.

Feeds

  • Activity Streams
  • RSS 2.0
  • Atom
  • Help
  • About
  • FAQ
  • TOS
  • Privacy
  • Source
  • Version
  • Contact

GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.

Creative Commons Attribution 3.0 All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.