The Science of Story: Talking about Gravity with a NASA Engineer

I had the opportunity to watch Gravity this weekend with Robby Stephenson, Senior Engineer in the Mechanical Engineering Division at NASA’s Jet Propulsion Laboratory. Afterwards we talked about the science on display in the film, what they got right and what seemed off. More importantly, we talked about how these things affected the story.

We also poked fun at George Clooney a little bit, just because.

Joining us in the conversation was Regan Hutson, a photographer and science buff who had some great things to contribute.

Warning: This article is for folks that have already seen the movie. We jump around a lot in the chronology of the movie and give major SPOILERS.

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James Roland: Okay, tell us what was fake. Or what stood out to you, not just the science but whatever.

Robby Stephenson:  I’m not usually an emotional person for a movie, but my emotions were all up and down. In a regular blockbuster or something, it’s like “yeah, things are blowing up but they’re not in danger” but I guess the realism was just so good … I was getting tense and I would catch myself not breathing and gripping my arm rests.

James: I did that too and it was my second viewing.

Regan Hutson: There were points with all the debris that it almost felt like a Michael Bay film.

James: Like the second time the debris comes she doesn’t get hit at all but everything around her gets destroyed.

Regan: Right.

James: Which they kind of had to do because if that capsule even gets pierced once she’s be out of commission, so they kind of had to fake it.

Robby: The biggest thing that sticks out to me was when Sandra Bullock lets George Clooney go … there’s nothing that pulls him away. They’re in space, they’re just floating. They’re not on the Titanic!

James: I was curious about that, because they stop sharply …

Robby: Yeah, so once you stop, you’re stopped. Nothing’s gonna make you move any more.

James: Clooney says the ropes are too loose and then you see her giving way …

Robby: But there’s nothing pulling on him.

James: My thought was they did such a good job with the physics in the beginning  …

Robby: I had the exact same thought.  When they were on the space shuttle everything looks really good, with the bolt floating away and her twisting around … but once they got on the space station I felt like the quality suffered a little bit.

James: A little bit, yeah.

Robby: All they would have had to do was have something hit the space station and it was rotating, then you’d have the centrifugal force. That would have been enough to pull him away. But it was fairly stable from what I could see.

James: Yeah.

Robby: But they got a lot of stuff right.

James: What about the fire, did that seem realistic to you?

Robby: Yeah, fire is one of the biggest dangers up there and they’ve had a couple of small ones.

James: And it’s orb-like?

Robby: Yeah, you should watch some of the videos they have with the physics of flame and candles and water in zero gravity.

James: Someone pointed out to me that even though you have pressure from your body, your intestines are used to the pull of gravity so they are affected as well. They’re essentially floating inside of you, something I hadn’t thought about.

Robby: Space is a constant feeling of falling.  It’s like going down the side of a roller coaster.  Something like half to two thirds of astronauts get sick, they expect it.  I think they don’t plan anything for their first day up there.

Regan: One of the things I couldn’t get out of the back of my head was  out of the entire international space station … nothing breached it. So the entire thing is still full of oxygen.  Which is kind of necessary for there to be some hope for her to survive, but it seems really, really unlikely.

James: Unless there was a hose inside she could plug into for oxygen, but I don’t know if that even exists.

Robby: Yeah, I don’t know a lot about the suits. But I do know you can’t take them off that fast.

James: That’s a good example though of where they needed to fake some things for the sake of story.  Later she sees she has seven minutes before the debris comes again, and in the next scene she’s outside the ship and I’m thinking “just seven minutes to get the suit on and get outside, you’re gonna rush and forget something.”

Robby: Yeah, everything was really compressed.  They don’t do anything fast.

James: To me, stuff like that is a given in a movie. If you go in nitpicking that then you’re missing the point.

Robby: I’ve observed space walks and it’s corn growing … I mean, it takes two hours to do anything. You want to see the highlights!

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James: It’s interesting. You could argue that because the whole movie evolves (or devolves, depending on your world view) into a story of faith, that as she goes along it gets more and more incredible and less realistic.  I don’t know if that’s intentional or if I’m just reading into it.  Like, what do you feel about the re-entry scene? Sandra Bullock’s character says she has a fifty-fifty chance, but I think I remember learning it’s a lot less than that … isn’t there a really narrow window where you won’t burn up?

Robby: Yeah, there really is.  I think the Soyuz are fairly foolproof, I mean they’re Russian so they’ve been flying them for 40 or 50 years. It’s an automated system. But you gotta hit a narrow window and get everything oriented the right way.

Regan: Wasn’t there a mission where just a small piece of damage to the shielding caused the entire thing to collapse during re-entry? Just knowing that, the probability seem very low [she’d survive]. But I guess the capsule was internal through the whole thing until she starts to re-enter so the shielding could have been protected.

James: My take on it was that wasn’t how it was supposed to go down, but because it was already falling she went down in the wreckage and then it broke apart around her. But then she was spinning and it righted itself, so I’m assuming that’s automated.

Robby: It is designed to right itself, a heavy side down kind of thing.

Regan: So the aerodynamics keep it oriented so the shielding carries the brunt of the heat.

James: What did you all think about the fire extinguisher scene? In a way I think the filmmakers fought against themselves because they did such a good job showing how fast they are moving and how hard it is to grab on to another moving object that it ultimately seems impossible.

Regan:  I think the question in that scenario is would a fire extinguisher have enough thrust?

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Robby: At the end when she ran out, she threw the can away from her to get a little extra thrust, I thought  that was a nice touch.

James: So that would actually work?

Robby: Yeah, it’s a change in momentum. You can throw anything and you’d get somewhere.

James: When she launches from the ISS and goes to the Chinese space station and makes the leap … presumably that’s incredibly fast, right?

Robby: If you think about it … it took her about an hour to get there so … orbital dynamics are funky.  Once you point in the direction you’re going you just coast. You see that when the two astronauts are tethered together.

James: Is there a certain amount of friction from solar winds?

Robby: There’s enough friction that you have to care about it when it comes to satellites, but it’s minimal. It would take like a month to slow down.

James: So how fast would you say that they were going?

Robby: Relative to each other? They’re all going 20,000 miles an hour. But the relative rate … a couple miles an hour? One to ten miles per hour, something like that? Which is enough to jerk your arm pretty good, imagine trying to catch someone rolling down a hill.

Robby: So what happened to the Chinese astronauts? Did they evacuate?

James: I assumed so, but why did they leave an escape pod?

Regan: Wouldn’t you want any evacuation system to be redundant in case the first didn’t work?

James: Good point. As near as I can tell, because I’m not an expert, all the points where they fudged the science were for story points.

Robby: Yeah.

James: Like when she gets thrown off at the beginning, the chances of him finding her seem so slim.

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Robby: Yeah, you couldn’t see anything out there.

Regan: Maybe the way she was spinning she was the only intermittent light source.

Robby: Yeah.

Regan: One thing that bothered me … do you remember the Radiolab episode where they’re talking to the astronaut, and he talks about how black the shadows are?  Having a photography background and paying attention I kept thinking “there’s definition in those shadows, that shouldn’t happen!”

JamesBut that’s just such an amazing opening and they have to get themselves out of it somehow. Probably every step of the way the filmmakers would ask “can we do this?” and the science adviser would say “no” and they’d say “well … we’re going to do it anyway.”

Robby: They don’t really have a jet pack like that, though.  I mean, they have maneuvering units but you don’t have nearly that capacity for flying around.  I don’ t even think they use them anymore.

James: The key word is “prototype”, George Clooney calls it a prototype.

Robby: Yeah, they throw that in there to justify it.

James: My thought was that it’s such a big deal to un-tether, what if the jet pack failed? But that’s sort of George Clooney’s character in this, he’s really out there. Kind of one note.  It’s maybe the most one note character he’s played … when they get to the dream-version of him, there isn’t even any hyperbole, that’s just him!

Robby: I have to admit (regarding the dream sequence),  my first thought was “he couldn’t have done that, that’s really stretching it!”

James: And at first you can’t see the astronaut’s face, so you think maybe it was another survivor or a rescue mission … then they open the hatch.

Robby: And you can’t do that!

James: And I thought “are they really doing this, going for a bleak, dark humor ending?” He climbs inside, looks at her dead body, and goes, “whoops.” At first you can’t figure out what’s going on, then as he starts to talk it dawns on you that there’s only one option … and it’s cheesy.

Robby: Yeah. I half expected her daughter to appear.

James: She’s hanging outside the window, “Mom! Mom!”

*Laughter*

James: From then until the end is where they just pour on the cheese.  I actually felt the earlier stuff is more powerful. When they’re just floating by and he’s talking to keep her sane, and she has that little monologue about her daughter dying. It’s so incredible.

Regan: I think one of the things I appreciated because it was in the same tone but it doesn’t hit you over the head as much was when she gets to the ISS and she takes off her spacesuit and just floats there.

James: So beautiful.

Regan: The shot turns into her as a fetus in the womb, down to even the umbilical cord!

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James: And it’s a shedding of the cocoon with the space suit … I felt that shot was powerful and earned. I thought the one at the end that didn’t work as well, because it was kind of a repeat thematically, was the “evolution” shot when she crawled out of the water.

Regan: Her struggling to get up on her feet was pretty justified.

James: True, but the angle they chose to film it was very specific.

Robby: Then they shoot up at her as she staggers off.

James: You half expect to see a monolith and she starts dancing around it with a bunch of apes.  It’s a beautiful shot, but it seemed a little on the nose to me.

Regan: That’s funny, that association didn’t occur to me until you said it.

James: I’ve heard other people talk about it, but maybe it’s more subtle than I thought.

Robby: I just thought it was cool they acknowledged how hard it is to walk after being in space because of the muscle loss.

James: I love when Sandra Bullock laughs because of the irony of the moment.  She has some good dialog and some cheesy dialog throughout the movie, but she owns all of it.  There’s so much talking to herself.

Robby: That’s got to be hard for an actor.

James: It is. And her character changes SO much by the end, she’s great.

Regan: It’s like a miniature version of Castaway with a female lead once George Clooney is gone.

James: George Clooney is Wilson?

Robby: “I’m coming for you!!!!!”

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James: She goes and buys a cardboard cutout of him when she gets home.

Regan: So that’s why his character’s so one-dimensional.

Robby: There it is!

James: Wow. Ouch. 

Regan: I wondered about when they get back to the space shuttle after everything’s destroyed, it didn’t make sense to me that there would be things floating around inside. I thought every loose object would have been evacuated when the hull was breached.

Robby: They do keep things tied down.

Regan: But there were little things like the Marvin the Martian doll and pens, all floating freely.

Robby: Yeah, so that should have been blown out, I think you’re right.  I will say this, the realism that they miss, which most people won’t notice …  is the orbital dynamics. The space stations aren’t all that close to each other.  The Hubble is in a completely different orbit.  And orbital dynamics are weird. I took classes in this. ‘Cause to go faster you first slow down and get in a lower orbit, then speed up and get to a higher orbit. When you trade altitude for speed, it’s all completely counter-intuitive.  So flying an approach vector, when they dock to the space station or something, it’s very non-intuitive.

James: So you go faster when you’re lower? In the same way that the outer edge of a record is moving at a different rate of speed from the center?

Robby: It’s the reverse of that, because on the outer edge of a record you’re going faster,  but in space when you’re in a higher orbit you’re actually going slower.  So to go from a low orbit to a high orbit you speed up, but by the time you get to the other side of the orbit you’re going slower and you would shoot your rocket in the opposite direction of what you might think.  It’s weird.

James: Wow.

Robby: So they dock from beneath, from the Earth direction, but it’s counter-intuitive, you can’t just point where you want to go and shoot your rocket.

James: And [the space stations are] at different altitudes.

Robby Yes. But even if they were, you can’t just speed up and go there, because as you speed up you’ll change orbit.

Regan: It make sense to me that something orbiting at a lower altitude needs to be moving more quickly so that the centrifugal force is countering gravity, but if you are at one orbit and you just push yourself down, are you going to increase in speed for some reason? Or do you have to push yourself to increase speed so that your orbit doesn’t degrade?

Robby: The weird thing is that it’s a little bit of both. So if you’re in a circular orbit your speed is the same everywhere.  But if you’re in an elliptical, if you go oval, your speed varies quite a bit.

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James: In the movie they make it seem like they could just shoot around and visit each other up there.

Robby: And that was definitely necessary for part of the story.

Regan: We’ve all been watching movies set in the future where they fly around in space like they’re in planes.

James: I’m curious. Everyone’s been talking about the realism and all the things they can find wrong … but I don’t remember people talking this much about the realism of Apollo 13 when it was released, do you?

Regan: Oh yeah, I do.

Robby:  I read things about how they had the wrong patch on their suits!

Regan: Do you mean picking it apart the same way?

James: Yes. Or lauding it.

Regan: I remember seeing an interview with Ron Howard where he talked about the premier and how they invited folks that worked on the Apollo missions and how they couldn’t believe some of it was done with computer.

James: Not to knock Gravity at all, but when everyone was talking about how realistic it was I just thought “well, Apollo 13 did it years ago.” But they also  had actual events to build on, Gravity is a fictional event.

Robby: That debris problem is very real up there, though.  There’s lots of junk up there.  And NORAD has to track everything down to the size of a basketball or something like that.  And every now and then they have to move the space station out of the way to keep it from getting hit.

James: Does the Earth’s rotation affect all this? Can you put something in orbit counter to the Earth’s movement?

Robby: Yes, but it just takes a whole lot more fuel.  Launching eastward is a whole lot easier than launching westward.

James:  So [in the movie] the debris is traveling the same direction as they are.

Robby: If you have an explosion it’s going all over the place.  The movie said something about the debris moving at 20,000 mph relative speed, which means it’s actually going about 50,000, I don’t know if it could have gotten that fast. But if you go look at the Endeavor space shuttle down at the science center and look at the windshield, it’s pitted.  That’s specks of dust going 20,000 miles per hour.

James:  Seeing it a second time I was determined to figure out how they did certain shots, but it’s a testament to the story that I got sucked in again and forgot to do that.

Robby: They got the northern lights in there.  That made me catch my breath. A lot of astronauts talk about seeing that. *pause* It really is a great movie.

James: Despite how terrifying it is, there’s gonna be a huge influx of applications to NASA.

It’s an Animal Thing: Why Riddick is a Franchise with Teeth

You aren’t afraid of the dark, are you?

Less than a year after The Matrix caused a sci-fi frenzy, Universal dumped its low-budget space flick Pitch Black into the desert of February film releases and left it to die. But like its feral anti-hero, the film survived, earning over twice its production budget and building a strong fan base.

The movie’s breakout character, Riddick, was a charismatic barbarian with a messy code of ethics and a wicked tongue. When he wasn’t spouting tough-guy dialog and shaving his head with a piece of shrapnel and axle grease, he was waxing poetic in voice-over narration. The result was a clever, layered character who was played to perfection by a relatively unknown Vin Diesel. The role got him into the Fast and the Furious franchise which launched a year later, propelling him into stardom.

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Everyone standing behind him … not so much.

The film itself is a lean, mean endeavor. On the surface it’s a basic “crash and survive” adventure tale, but underneath David Twohy honed a wonderful script about guilt and second chances, basing his story on work from Jim and Ken Wheat, a sci-fi writing duo who worked within the Star Wars and A Nightmare on Elm Street franchises.

Early on it’s clear Twohy (who also directed) is great at two important (yet often neglected) elements of great genre storytelling: he writes colorful, layered characters and puts them in rich, unique settings.

From the opening scenes where Radha Mitchell’s space pilot, Fry, attempts to jettison all of her sleeping passengers in an attempt to save the ship, it’s clear there’s more going on than the average adventure flick. When she’s thwarted by the other pilot and still manages to land the ship safely, the character drama ratchets to intense levels as the survivors laud her with praise for saving their necks, totally unaware she tried to kill all of them.

It’s a gutsy way to open the movie. Expectations are low, with audiences needing only screams and blood to justify the ticket price. By setting the bar so high so early, Twohy forced himself to dig deep for the payoff, and it resulted in a wonderful, richly rewarding ending.

When asked about his film Cabin in the Woods and why he and co-writer Joss Whedon decided to reveal early on that the entire scenario was controlled by a scientific facility, Goddard replied:

“Put all your cards on the table right away, and then that will force you to come up with new cards.”

Judging by the fantastic ending to Cabin in the Woods — which manages to genuinely surprise its audience without coming completely out of left field — his comment is true. Still, it’s often the harder road, so Twohy’s opening sequence to Pitch Black is commendable in a sci-fi market that so often saves character reveals to create a forced sense of mystery (I’m looking at you Oblivion, John Carter, and Star Trek Into Darkness).

Another element that sets this film apart is the production design. The art department created an extraordinary world on a tiny budget, from the sarcophagus filled with contraband booze and ancient weapons (again the theme of dark secrets) to the strange bone trees rising from the skeletons of alien behemoths, to the Lovecraftian demons that lurk under the soil, the Riddick universe was quickly established as wild and imaginative, yet strangely realistic.

PitchBlackCritterIt’s no George Lucas space pig, but it will do.

The crowning moment of Pitch Black is not the awesome monsters, it’s a scene between Fry and Riddick in the warm glow of a waiting escape shuttle, debating whether to face the darkness and rescue the other survivors… or escape now and save their own necks.

It’s here that all the deft character work pays off. Fry’s motivation is clear; she feels guilty for her previous actions and wants to save the remaining crew, but needs Riddick’s animalistic fighting skills in order to survive the mission. But when Riddick has the opportunity to fly the ship away, he decides instead to debate Fry on the merits of heroism. There are lots of scenes like this at the ends of films and few of them feel realistic and justified. Why would the characters stop for a chat in the middle of all that mayhem?

The thing is, Riddick isn’t screwing with Fry just to be melodramatic, he’s testing her like a child testing boundaries. It’s here that Riddick’s backstory comes into play. Abandoned in a dumpster, raised in the prison system, hounded by immoral mercenaries masquerading as officers of the law, Riddick is pushing back against Fry’s moral outrage. He knows she almost jettisoned her entire crew, so why the change of heart? When he finally pushes her to the limit, making her admit she knows she will fail to save the crew but must try anyway, he utters a single word: “interesting.”

This is more than a cocky one-liner, it’s the first time Riddick has seen a true adult. In this moment, Pitch Black coalesces into a bloody, brutal coming-of-age story.

Pitch_Black_vin_dieselJust like the works of Judy Blume.

Of course he decides to help her, and the final line of the movie sums up his entire character arc. As the survivors fly off into space, someone asks Riddick what they will do if they are found by the authorities, who will want to arrest him.

He replies with a shrug, “tell them Riddick’s dead. He died somewhere on that planet.”

I’ll kill you with my teacup.

Pitch Black did fairly well in theaters but incredibly well on DVD. This, coupled with Vin Diesel’s rising star power from a certain car racing franchise, paved the way for a very strange sequel.

But where do you go when at the end of the last film, your lead character changed from vicious badass to moral defender?

Twohy’s answer was to focus on the greater universe, taking his 105 million dollar budget (compared to Pitch Black’s 23 million) and showing the various planets and cultures surrounding the original story.

The result was a standalone adventure with strangely pluralized title The Chronicles of Riddick, a riotous, mildly-campy space romp that lacked the thematic focus of the original, but kept the fun dialog and fantastic production design.

Generally considered a flop, the film has its defenders (of which I am one). A great article from Little White Lies highlights the fact that in the three years between the two films, sci-fi audiences were subjected to terrible Star Wars prequels, a lame duck final Star Trek movie, Tim Burton’s infamous Planet of the Apes reboot, and Disney’s Treasure Planet. All of thse films culled from pre-established stories dating from 1977 all the way back to 1883. This alone makes Twohy’s brand new, diverse, original sci-fi world worthy of an audience. Despite unavoidable comparisons to the far better Pitch Black, taken on its own merits The Chronicles of Riddick is genuinely a good movie.

The opening sequence puts us in familiar territory: Riddick is on the run from mercenaries on a hostile planet. As he leaps across bottomless chasms that are threaded through maze-like ridges of rock, it’s clear that Twohy’s knack for world-building has returned for the sequel. The ships that chase Riddick have external harnesses holding armed men, fully exposed to the elements. This immediately tells us that these ships are not designed for space travel, indicating there must be a larger ship standing by in orbit. Simple details like this harken back to the glory days of Star Wars, when a single laser sword pulled from a basket in an old man’s hut created the sense of a greater universe far better than showing thousands of laser swords in every single shot.

Where Chronicles loses most people is with the Necromongers, a race of death-worshiping mystics that strut around in cumbersome armor and spout clunky dialog.

NecroSo, how do I look … why are you laughing?

The Necromongers may be campy but they are also clever and unique to a sci-fi franchise, diving headlong into the supernatural. Their ship design is mesmerizing, enormous monoliths adorned with Mt. Rushmore-style faces that plunge from deep space and embed themselves deep into a planet’s crust.

The Necromonger mythology also works to subvert the usual blockbuster’s adherence to the Joseph Campbell monomyth. Riddick may be the so-called “chosen one”, but he is the chosen one for a sinister, world-devouring death cult, which works well for a hero who likes to drink human blood and chase it with peppermint schnapps.

This video has a lot more to say on the subject. It’s not only insightful, but it also has a puppet so you should watch it.

After setting up the Necromongers and the fact they want Riddick dead, the movie resets itself on the prison planet of Crematoria. It’s here where some of the film’s best moments take place, as Riddick befriends a super cool lizard cat, kills an inmate with a teacup, and literally outruns sunshine.

Riddick_hellhound_Kitty!

The entire Crematoria segment feels a bit forced within the entire scope of the story, but as a self-contained section it’s top notch adventure. I know this sounds like I’m making justifications for the movie… and I am. But it’s something that I think gets lost when deconstructing story. Sometimes a scene or moment or, hell, an entire storyline, can be out of place. It can compromise the integrity of the whole.

But if it’s fun, sometimes you just gotta say fuckit.

The film’s third act is filled with more pouty Necromonger monologues and weird-ass visuals, but boasts a  game-changing twist: Riddick inadvertently becomes the leader of the Necromongers. It’s this final moment that might be the nail in the coffin for fans and critics alike, since it changes the main character from feral underdog to empire leader.

The Chronicles of Riddick is so vastly different from Pitch Black in scope and tone that it went the way of Weezer’s Pinkerton album. It was doomed to fail before it started, finding that sweet spot of hypocrisy with a voracious movie audience that clamors for something original yet often rejects new things.

Many critics missed the point, like Benjamin Strong’s review for the Village Voice which spent a whopping one paragraph dissecting the movie and the rest of its creative energy on a stupid pun for the title.  Another somewhat embarrassing review from Salon used trendy, catch-all criticisms (such as accusing the film of confusing “MTV style” editing, which is nonsense), attacked Vin Diesel personally for his career choices that had nothing to do with the Riddick films, and blatantly missed the mark by claiming The Chronicles of Riddick re-hashed tropes from The Lord of the Rings and The Matrix, when in fact the movie defies and deconstructs those tropes.

While it’s clear The Chronicles of Riddick lacked the narrative focus and thematic punch of the first film, it’s still a grand, clever adventure with more thrills than the average blockbuster.

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Admittedly, this dude was a little weird.

Three down… you see where I’m going with this?

Nine years after The Chronicles of Riddick, Twohy got his third chance with the Riddick character. Whether it was the critical backlash of the previous film, or the smaller budget, he returned to the familiar Pitch Black set up of “crash and survive” but maintained the overall narrative thread from Chronicles.

Riddick is a great little flick that thrills and chills to varying degrees of success. Large sections border on brilliant, while others feel merely adequate. As per usual, the visuals are stunning and the dialog is snappy, and ultimately the  film feels like a sort of apology for making the Riddick character too civilized.

The story begins after Riddick is betrayed, kicked out of the Necromonger clan, and left for dead in a barren wasteland of rock. The first third is almost a standalone short film. It follows Riddick as he fights off a pack of wild dogs, treats his wounds, encounters a new deadly space critter, and journeys out of the wasteland to the fertile fields beyond.

This journey literally takes him months of story time, and it’s rare to see a genre flick take so much time to set up its tale. Slow but never boring, it’s easily the best part of the film, and a credit to Vin Diesel’s acting skills and the VFX team that made his CGI canine companion a realistic, endearing character instead of a cutsie gimmick.

riddick-3-concept-art-01It’s kind of like Old Yeller in space (spoiler).

Riddick also goes a cool job of combining the deeper meaning of Pitch Black with the in-your-face pulpiness of Chronicles.

Early in the film we see a flashback of Riddick in his Necromonger glory days, sitting dejected on a throne while four naked concubines beckon him to their orgy. The once virile Riddick spares them the barest of glances before he resumes his brooding.

It’s not exactly subtle, but if this impotence metaphor wasn’t clear enough, a few scenes later Riddick encounters this film’s space creature, a yonic, sharp-toothed mouth mounted between two legs, counter-balanced by a long, fanged tail. Dependent on water to survive, the creature lurks in shallow pools, raising its poisonous tail out of the water to strike. The sexual metaphors continue as an impending rain storm threatens to loosen the soil and birth thousands of these monsters.

Riddick-monster2It’s like Jurassic Park, but with vulva-penises instead of velociraptors.

The action finally kicks off when Riddick discovers a mercenary way station and sets off a distress beacon.

Two sets of mercenaries descend on the location, and Twohy immediately delineates between the two teams, making one evil and the other good. While the narrative paints in some pretty broad strokes — the “bad” mercenaries kill an innocent woman for fun within ten minutes of landing, for example — this clear cut delineation allows for Riddick to slaughter enough people to attain the R-rating that fans wanted while keeping the “hero” part of his his anti-hero mantle. Love it or hate it, at least they acknowledged the character work from the previous films.

Despite a few repetitive moments (the movie boasts not one, not two, but three stand-off sequences, all in a row), the movie thrives on clever kills and the weird chemistry between Riddick and the lone female mercenary named Dahl (sound it out).  Played by Katee Sackhoff, Dahl states early on that she’s a lesbian, yet reacts with mild interest whenever Riddick lays verbal claim to her body.

riddick_katee_sackhoff_vin_dieselPure chemistry.

By the time Dahl straddles Riddick with a seductive smile, the message from Twohy and Diesel is loud and clear: Riddick got his balls back. That may lack the dramatic nuance of Pitch Black (and raise a few eyebrows about the tired male fantasy of converting lesbians), but it’s great to see a summer flick that isn’t totally steralized for mass audience appeal and a PG-13 rating.

The film’s final act is the very definition of mediocre (the classic definition of “in the middle”, not the recent, bizarre definition of “worst thing ever made according to this one guy on Twitter”). It depends far too much on Pitch Black‘s finale and loses sight of its thematic through line, but Riddick still boasts some deftly handled action and general badassery. It’s final moments may lack the dramatic heights of  Pitch Black, but it still soars far above the recent batch of lackluster genre flicks.

riddick BIKE-14Richard B. Riddick
(Baldius Heroeclyes)

Since its creation, the Riddick franchise has struggled for life. From the first film’s harsh indie production in the Australian outback, to the harsher critical backlash against the sequel, to the the financing troubles of this third picture, the trilogy is the ultimate cinematic underdog. Vin Diesel even went so far as to leverage his own house as collateral with the financing company for Riddick, making him effectively homeless if they failed to finish the movie.

It’s a special sort of story that incites that kind of moxy from its creators, and despite the franchise’s detractors, the films have had consistently lucrative box-office (despite popular opinion, The Chronicles of Riddick was not the financial disaster it was made out to be), proving it’s the audience that has the final say.

Over the course of three movies, Twohy and gang have created a clever, visceral science-fiction experience that’s unlike anything else out there. It ranges from inspired drama to bawdy escapism, but it does it all with flair and fine craftsmanship. It’s a franchise that should have been dead long ago, but keeps fighting for life, and with any luck our summers will be filled with many more flawed and fantastic Riddick adventures.