Disturbing the Universe

David L Clements, science and science fiction

Is Gravity Science Fiction?

1 Comment

I just wrote the following response to an article and blog comment on lablit.com suggesting that the film Gravity should not be classified as Science Fiction. I thought I should add the comment here as well.

What’s the beef with science fiction?

There are several issues with Gravity that to my mind make it more Science Fiction than Science Fact. The convenient locations of the various places on orbit is already noted, but there are other operational issues in Gravity which elide the facts to make it more convenient (and survivable) for the characters. These include the amount of time taken to put on (and take off) a space suit, and the amount of time it takes to repressurise an airlock.

But above and beyond all these, is the key science fictional idea that drives the film: Kessler syndrome, the hypthesised debris cascade that would result as space debris hits other satellites causing even more debris, and eventually wiping out everything in low Earth orbit (LEO). Even ignoring the fact that the data linking satellites, TDRS, that are used to link communications across LEO are in geosynchronous orbit (GEO) and thus immune from the effect – something the film ignores to add narrative tension – the Kessler syndrome is not something that has been probed to be real. It’s plausible, but it is not a scientific fact, confirmed (thank goodness) by experiment.

To my mind that makes Gravity science fiction more than anything else. Hard SF, for sure, since they try as hard as possible to get everything else as right as they can given the story they want to tell, but SF nevertheless.

I’d contrast this with another film that is borderline SF: Deep Impact. This posits the possibility of a large asteroid impact threatening all life on Earth. Most people would call this film SF, but, unlike Gravity and the Kessler Syndrome, we know that such giant impacts have happened in the past – one wiped out the dinosaurs.

Would you classify that as SF, like most people, or as something different?

I think what lablit.com does is great, and have a couple of things published there, but the site is oddly allergic to science fiction, trying to distance itself from something they have, to my mind, more in common with than differences.

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Author: davecl

Astronomy, science, science fiction

One thought on “Is Gravity Science Fiction?

  1. I certainly don’t classify it as a good film…

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