Science in Fiction: The Old Man and the Sea

January 11th, 2012

There’s a fun, literary homework problem in the textbook I’m using this semester (Foundations of Astrophysics by Ryden and Peterson).  It’s a pretty good textbook overall, although it’s a bit calculus heavy for when some of our students take my course and it’s short on example problems.  One thing I do like is that the authors are well educated outside of science, and have some culturally interesting asides and work in literary references into the text and homework.  Hemingway’s The Old Man and the Sea is a favorite of mine, but I don’t recalling catching this howler when I read it, and I should have:

“It was dark now as it becomes dark quickly after the Sun sets in September.  He lay against the worn wood of the bow and rested all that he could.  The first stars were out.  He did not know the name of Rigel but he saw it and knew soon they would all be out and he would have all his distant friends.”

One way of checking the accuracy of this passage is to look up the coordinates of Rigel and go use a planetarium program and set it for Cuba, 6pm, September 15th.  A bit easier to get the same answer is to determine the local sidereal time at that time and time of the year and comparing the coordinates of Rigel (local sidereal time or LST is basically the same as the right ascension coordinate of stars passing directly overhead).

The easiest way for myself, and I imagine most people reading here, is to realize that Rigel is a very bright star and part of the best recognized constellation: Orion.  Rigel is the knee opposite the bright red shoulder of Betelguese.

Now, knowing which star is Rigel, Betelguese, Sirius, Deneb, Vega, or whatever, is not something the average person knows.  I do think the average person, even those living in larger cities, knows Orion.  They also might be able to recall that it’s a constellation easily seen in the early evening in…the winter.  Like now.  In September, at sunset, it is not in the sky.  It hasn’t yet risen, and won’t be up until very late in the night.

Don’t let Hemingway’s poor astronomy knowledge stop you from reading The Old Man in the Sea.  It’s a really good read otherwise, and one of the inspirations for my novel Star Dragon.

(T.S. Eliot has an even worse howler that I’ll dig up and discuss at a later date.)

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