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    Bad Astronomy

    badastronomy.com · Personal blog · on HN since 2008

    Phil Plait, an astronomer and science writer, debunks astronomy myths and explains space topics for a general audience.

    Visit blogHN submissions
    SpaceScience
    What HN says

    Commenters call Plait one of their favorite science writers and recommend his pages as expert takes on topics like the Apollo photos and starlight.

    Stats for nerds
    16HN people shared it
    6linked in comments
    55story points
    Sep 2023last shared
    2008people per year2023

    Top posts on HN

    1. 1
      The Long Climb from the Sun's Core (1997)
      1 person · 32 points · first shared 2013 · 11 comments on HN
    2. 2
      Ten things you don’t know about the Milky Way Galaxy
      1 person · 7 points · first shared 2008 · 2 comments on HN
    3. 3
      Are we aliens?
      1 person · 7 points · first shared 2008 · 2 comments on HN
    4. 4
      No Alien Signal
      2 people · 5 points · first shared 2008 · Discussion on HN
    5. 5
      Gamma ray burst visible to the naked eye
      1 person · 3 points · first shared 2008 · 1 comments on HN
    6. 6
      Mars Lander Phoenix descending (picture taken during flight)
      1 person · 1 points · first shared 2008 · Discussion on HN
    7. 7
      Foxapollo
      3 people · first shared 2011
    8. 8
      Whois
      1 person · first shared 2023
    9. 9
      Meteoric
      1 person · first shared 2013
    10. 10
      Index
      1 person · first shared 2019

    What HN people wrote when they linked it

    • skeltoacSep 2023

      The author is Phil Plait, Bad Astronomer. He is writing for an audience that is not as technically well-informed as most of HN, so it’s no surprise to see his writing called out as “pedantic” by… a bunch of pedants! He’s helping people understand the world a bit better and that’s a great thing to do.

      I recognized the style before I noticed his name. Phil was writing online as The Bad Astronomer at least as far back as 1999. I started reading his blog after it appeared on my WordPress “Blogs of the Day” ranking site in 2005.

      http://www.badastronomy.com/info/whois.html
      https://web.archive.org/web/20230922000000*/http://www.badastronomy.com:80/
      https://web.archive.org/web/20051212173430/http://blogsoftheday.com:80/?list=topsites.html

    • JonnieCacheJan 2011

      >Another argument I heard against 3D movies is that apparently our brains use all sorts of cues (about 20, I think) other than differences between what the eyes see, in order to make us see things as 3D... 3D movies provide only one of those cues, and so naturally causes a strange feeling because the other 19 cues are missing.

      A big one is atmospheric haze, which is easy to reproduce to be fair. It is also the reason for a lot of the perceived inconsistencies in apollo moon photography: http://www.badastronomy.com/bad/tv/foxapollo.html#backgrounds

    • overlordalexNov 2019

      > This article brings about the exact same glee and nostalgia.

      Phil Plait is one of my favourite science writers, and has been consistently putting out great "bad astronomy" blog posts for years (decades?). If you want more of his writing you can check out the website:
      http://www.badastronomy.com/index.html

    • ryanjshawJul 2014

      If you genuinely want an expert's take on these matters, this is a good place to go: http://www.badastronomy.com/bad/tv/foxapollo.html

      Specifically w.r.t. photos: http://www.iangoddard.com/moon01.htm

      There's also a book: http://www.amazon.com/Bad-Astronomy-Misconceptions-Revealed-Astrology/dp/0471409766

    • akvadrakoMar 2018

      Honestly I'm not sure, but based my comment off this page I read years ago:

      http://www.badastronomy.com/bad/misc/badstarlight.html

      It doesn't seem so unreasonable. I have also read the human eye can detect a single photon and 450 photons per cm³ is about 3e10 photons per second.

    • DanielRibeiroJun 2013

      It seems that the moon does rotate: http://curious.astro.cornell.edu/question.php?number=142

      At least to an observer sitting in a fixed point in outer space.

      Edit: better explanation: http://www.badastronomy.com/bad/misc/moon_spin.html

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