Showing posts with label space. Show all posts
Showing posts with label space. Show all posts

Friday, January 17, 2014

Ronald McNair, astronaut

It was announced today that several old, previously unpublished photos of the space shuttle Challenger disaster had been found and put online. I have always been interested in spaceflight and astronomy and STS-51-L - among other fateful flights - remains in my mind as a great engineering failure and terrible loss of brave astronauts and scientists, and a reminder of how modern technology sometimes fails us. Inspired by the surfaced photos, I took a new look at the Wikipedia article about the disaster.

The Challenger accident happened when I was only 8 years old. I remember looking at the famous group photo of the crew and thinking that they looked very "American": of the seven crew members only three were white men - there were also two women, one Japanese-American and one African-American man. Also, one of the women was not a career astronaut but a school teacher. In this sense, the crew looked very much like the United States I knew. I also thought Judith Resnik's large hairdo was very typical for Americans in the 1980s!

The crew of STS-51-L in November, 1985
Ellison Onizuka (in the photo the first from the left in the second row) was the first Asian American in space (he had flown to space before), and apparently also the first Buddhist. Christa McAuliffe was also probably the first astronaut of Lebanese roots.

Ronald McNair was the second African American in space (he had flown before, too), if Arnaldo Tamayo Méndez of Cuba doesn't count. He would probably have been the third, if Robert Lawrence had not been killed in an aviation accident in 1967.

It turns out that my university (University of Illinois) has a minority student scholar program named after Ronald McNair. I did notice the familiar name when I visited the Turner Student Services Building the first time two years ago, but the people at the program office I talked to were not sure if it had been named after the astronaut or somebody else.

Dr. Ronald E. McNair, NASA astronaut
When I was a kid, I remember thinking that McNair looked very "American". In 1986, I had not yet met any non-white people but I recognized many African American politicians, athletes, actors and musicians. McNair's wide smile somehow reminded me of some people I knew, but I didn't research the crew's biographies much further. I did remember the smile, though.

Today, I read out the Wikipedia article about him and it looks like that he died younger than I am now - he was only 35 at the time of the Challenger disaster. He had received a PhD degree from MIT when he was 26, becoming a known expert in laser physics. By the time of his death, he already received three honorary doctorates. He was also the first astronaut of the Bahá'í faith, and quite possibly the first saxophonist in space. Jean-Michel Jarre's The Last Rendez-Vous (Ron's Piece) is dedicated to him - McNair was expected to record the solo for this track in space, and later perform it live at Jarre's concert in Houston in April, 1986.



In United States, there seems to be an obsession to name everything after famous people (military heroes, politicians, rich donors, astronauts). Often it feels unnecessary, sometimes even ridiculous, but sometimes it makes you think about and reflect on stories behind renowned, accomplished and exceptional individuals.

It's interesting to think that in 1986 I noticed McNair not because he seemed different but because in the diverse crew of STS-51-L, he did not seem different. The days of all-male, all-white and all-military crews of Gemini and Apollo programs were long gone - it was now time for all-American crews.

The shuttle flights resumed in 1989 and increasing international cooperation was notable in flight crews - astronauts from Canada, Germany, Russia, Japan and other countries flew on Shuttle flights before the program ended in 2011 - including the first (enrolled) member of an aboriginal tribe in space, John Herrington (of Chickasaw First Nation).

Sure, my observations of the STS-51-L crew in 1986 were somewhat naíve but I'm only happy that my belief (or hope) in space belonging to a more diverse group of travellers than just American and Soviet/Russian fighter pilots did become true.

Monday, October 7, 2013

Gravity: ridiculously implausible action fantasy

Gravity is in many ways the best and most beautiful space movie ever made. It depicts an ill-fated Space Shuttle mission that leaves two astronauts to attempt to survive - and cope with the gravity that is pulling them towards the Earth (well, there are some caveats with this explanation, which will be explained later).

I admit that I was critical of this movie once I read who were cast as the two astronauts for this film. For a realistic-looking serious film about astronauts trying to survive in space they had cast two of the most sexy and beautiful people on this planet - George Clooney and Sandra Bullock. I don't have qualms about their acting skills, but I thought it was strange that actors known for their sexiness were cast.

Casting

According to IMDB, George Clooney was cast as mission commander Matt Kowalski after Robert Downey, Jr. dropped out to scheduling conflicts. Sandra Bullock was cast as mission specialist Ryan Stone after Angelina Jolie dropped out and Rachel Weisz, Naomi Watts, Natalie Portman, Marion Cotillard, Abbie Cornish, Carey Mulligan, Sienna Miller, Scarlett Johansson, Blake Lively, Rebecca Hall and Olivia Wilde were approached. Boy, that is a lot of beautiful women! Is Sandra Bullock only the 13th most beautiful woman on this planet, after all?

Now, we enjoy seeing Clooney's and Bullock's faces. They are incredibly handsome and except for short scenes, that's almost all we see of them. That is probably why producers thought it was paramount that the only two faces seen in the whole film are recognizable and relatable. I still feel uneasy about the thought of how much they appreciated visual beauty of the actors - and the approached actresses are not known for roles as researchers or other technology-related roles. Bullock is especially known for romantic comedies and some action flicks (Speed 2 comes to mind). I was surprised to learn that Carrie-Anne Moss (Matrix, Mission to Mars) or Michelle Yeoh (Sunshine) were not even approached for this role!

Still, Clooney and Bullock perform as professionals and do everything they are expected to do. Their characters have been written to contrast each other: Kowalski is a man, Stone is a woman. Kowalski is a career astronaut, Stone a researcher. Kowalski is experienced and calm, Stone is inexperienced and frightened. Kowalski tells jokes and has good humor, Stone is a serious scientist. Kowalski knows exactly what to do and helps Stone to survive, Stone cries in panic. Kowalski is wearing the Extravehicular Mobility Unit (like a jetpac) needed for survival, Stone is not. Thanks to the Space Shuttle, many kinds of American (and other) astronauts have flown to space, and Eileen Collins (commander of STS-114) is one of the best known ones. In this sense, Kowalski and Stone feel like stereotypes and we have been these before - Robert Duvall's veteran astronaut Spurgeon Tanner in Deep Impact is one example. It is, of course, very convenient to introduce "easy" characters to the audience, so they can concentrate on other elements of the story.

Start of troubles

The film depicts STS-157, a fictional mission for Space Shuttle Explorer, servicing the Hubble Space Telescope, and is thus very much like the real HST Servicing Mission 4 (STS-125), flown in 2009. Near the end of the mission, the crew is told that a Russian space defence experiment goes awry and it results in a chain reaction of debris events which threaten both the shuttle and ISS. Explorer is ordered to abort the mission and ISS evacuated. Before the crew of Explorer can take any action, approaching debris destroys the shuttle and kills its crew, save for Kowalski and Stone, who are left hurtling in orbit.

It seems that Kowalski couldn't care much less about what has happened - he stays calm and helps Stone to come to terms with the new situation. The situation is depicted very realistically and it looks extremely good on the screen (expect for the 3D experience which I still think is a sham). Kowalski has the principle of concentrating to the task at hand and thinking methodologically, which is what all good pilots and astronauts do, and first they check out Explorer, which is a wreck. Knowing that they must find a safe haven in any case - to protect themselves for any additional debris and to make any rescue possible - they head for the ISS which is on the exact same orbit. What?! Since when has Hubble and ISS been on the same orbit?

This is where the film goes ridiculous. Kowalski says ISS is indeed nearby and we can see it clearly in the horizon. In real life, Hubble orbits at an altitude of roughly 650 km, with orbital inclination of 28.5 degrees. ISS orbits at 450 km and 51.65 degrees. Even though there are some passages in the dialog suggesting that they are, in fact, not on the same orbit, they have no trouble traveling from Explorer/Hubble to ISS in a couple of minutes, using EMU's thrusters.

From implausible to ridiculous

As implausible it is, they are able to reach the ISS and grasp the Soyuz spacecraft's deployed parachute, clinging to survival. Even though ISS has suffered some damage, it is intact. This is where Kowalski's extensive spaceflight experience would be crucial, as they might have to fly the Soyuz to the Chinese space station Tiangong (which is also on the same orbit!). However, without explaining why, Kowalski refuses to help Stone any more and sacrifices himself. Just like that he floats away, even though they had already succeeded in the most difficult part of the rescue.

For some mysterious reason, ISS does not have contact with Houston. It is difficult to understand why, because ISS is in constant contact with the TDRS communications satellites in the geostationary orbit, which is not affected by the debris in LEO. Anyway, ISS then blows up and Stone escapes in Soyuz, however she uses all its maneuvering fuel while trying to break free from its parachute. She also removes her helmet many times, even though it is clear that there is a great danger of depressurization. Even though she has spacewalk training, she has no trouble performing an unplanned EVA to detach the parachute, using the Russian Orlan space suit without its backpack. It is not explained why there was a Soyuz docked to ISS - a normal crew of six would have required both Soyuzes as escape ships!

Stone decides to commit suicide because she doesn't know what to do. Hallucinating, she sees Kowalski to return and give her advice. As implausible as this scene is, it is sadly almost believable in the context of the events in this film. Anyway, then Stone uses Soyuz's landing engines to propel it to Tiangong and she reaches it in minutes, and then ejects herself to the station. Now, it seems that they have a velocity difference of perhaps 1 km/s but that is rendered to nil with the help of a fire extinguisher. Stone has no trouble getting inside the space station, but at the same time, the station is reentering the atmosphere with no explanation. Why has its orbital altitude dropped from nominal 450 km to 150 km where it would reenter? With only minutes left, Stone enters the docked Shenzhou spacecraft (its crew having disappeared without explanation) and successfully lands it.

Stone clearly does not like to wear a helmet, even though there is a clear danger of depressurization. This disregard for safety achieves its climax when the ship lands in a lake. You see - even though 70 % of the Earth is water, for some reason this ship lands on land, except that it happens to find a small lake to land on. This has happened with a Soyuz spacecraft once. In 1976, Soyuz_23 landed on frozen Lake Tenzig and the crew waited in the capsule overnight for the rescue crew to arrive, with no immediate danger. All Soyuz landing capsules are equipped with an inflatable raft, food and even a gun to shoot wolves (no joke). I guess we can assume Stone had some reason to exit the craft, but then she almost drowned, as water poured in and she was not wearing a helmet. In seconds, she was able to exit from the Orlan spacesuit and swim to the shore.

The beautiful space

Practically never before have realistic (and real) spacecraft been shown on the screen in such a glory. I have never seen such advanced special effects - everything looked totally real. Before this film, Alfonso Cuarón had directed Children of Men, a thrilling yet very realistic-looking science fiction film that was met with high praise. Gravity sets new standards in the use of special effects that support the story. The depiction of zero-gravity environments is incredibly good and Bullock seems to have no trouble navigating through the ISS in the absence of gravity. Also, the idea of having only two actors in the movie and almost no sound except the masterful music by Steven Price is excellent and was realized surprisingly well and is a bold approach.

As beautifully as spaceships and debris in Gravity are done, there are many compromises. The dangerous space debris looks like a mild wind, bringing trash and dust. In reality, it might approach at 17 km/s, making it impossible to see it before it hits. It is also interesting how the debris hits and destroys absolutely everything except our protagonist astronauts and whatever spacecraft Stone happens to be in. 

This film is also an action fantasy film, like Armageddon. Very implausible things happen and we are supposed to believe them for the sake of entertainment, except that Gravity is portrayed as being a serious film. Instead of everything keeping blowing up, a very interesting and realistic story could have been built around the concept of escaping to ISS and then somehow managing to get rescued, with Kowalski, of course. Instead, ISS blows up and Stone escapes to Tiangong, which then blows up. In many ways, Armageddon was much more plausible - and it had official support from NASA, too.

This is the kind of semi-realistic science fiction that a couple of space-buff high school boys might come up with in their fantasies. In this case, they were given 55 million dollars to realize their fantasy and while the result is spectacular, it is also spectacularly implausible, which is a very bad thing for such an amicable attempt in original moviemaking. The packed and episodic script does not leave much room for reflection and more peaceful sequences where Stone might have come to terms with the situation. 











Sunday, August 11, 2013

My take on Elysium

The long-awaited Elysium, Neill Blomkamp's grim vision of Earth in 2154, arrived to theaters in USA this week. It is Blompamp's - a young collaborator of Peter Jackson's - only second feature film, after the acclaimed District 9. A native of South Africa, Blomkamp seems attracted to overpopulation, ravaged cities and social injustice, and in this sense Elysium looks like another District 9 (2009), just one with bigger budget and Matt Damon.



I enjoyed District 9. It was a fresh look into the theme of aliens arriving to Earth for whatever reason. Its special effects were refreshing too, and Sharlto Copley's main character was an official with personality and humor. Copley is back in Elysium as well, and so are so many other things from Blomakmp's South African team.

I enjoyed Elysium. It is indeed a well made movie, but not different enough from the director's previous movie and it suffers from some of the same problems.

The idea of the mankind having split into two populations - one rich and privileged, other poor and disadvantaged - isn't a new concept, even H. G. Wells explored this idea in The Time Machine. The space habitat Elysium is reminiscent of visions of Wehrner von Braun and others. The dystopian Earth reminds me of worlds of RoboCop, Judge Dredd and Blade Runner (well, at least a bit). The plot just isn't that novel, but execution is mostly outstanding, with Matt Damon as an English-speaking hero who ends up carrying Elysium's bootstrap code in his head.

The first problem is the casting of a big name like Matt Damon. He is a well-known American (action) movie star. The scenes of Earth were filmed around Mexico City, with most of the people on screen being Spanish-speaking Mexicans. Of course, this is supposed to be the future Los Angeles, but the friendly English-speaking Matt Damon sticks out. A less-known Mexican actor would have been a more suitable choice for the main role. Damon still plays the character of da Costa well and delivers a good performance both dramatically and actionwise - and there is maybe too much action in this film.

However, then there is Jodie Foster. I fet like her role as the "evil", overprotective secretary Jessica Delacourt was one-dimensional and just a rehash of her role as Madeleine White in Inside Man (2006). There was no real justification for her actions, she is just the classic stupid antagonist. Sadly, she reminds me of the evil bad guy Hein of Final Fantasy (2001).

The most delicious part of the film is whenever the insane mercenary Kruger - played by Sharlto Copley - is on the screen. He heads an apparently South African mercenary team supported by Elysium and Jessica Delacourt. He is blatantly repulsive, ugly and wicked. However, his interactions with da Costa are largely about shooting weapons and hitting each other with the help of their exoskeletons. This is what plagued District 9 as well - there is too much action and too many explosions that take the stage from drama and meaningful story.


I generally liked the use of information technology in the story, but even though some thought had been put into the design of all the technology, it is still plagued by some classic Hollywood  shortcomings - such as source code showing when a program is loaded and executed, errors appearing in huge popup dialogs instead of command line and so on. Come on, you can do better. In so many instances in this film, they knew what they were doing, so why deviate from that?

Since Elysium is in space (low Earth orbit), you need a spacecraft to travel there. Perhaps surprisingly, the airships (jet-powered craft with no wings) can fly there without problems. Generally, the spaceflight part of the movie was handled very badly - it is like nobody cared a bit how you actually fly to space. In order to reach the orbit of Elysium, you need a delta-v of about 8.5 km/s and it is not easy to imagine how a simple helicopter-like craft could possible carry enough fuel to attain that speed. In addition, it seems all you have to do is to aim for Elysium and accelerate. Orbital mechanics don't work that way. It was also showed how craft approach directly from Earth's direction, constantly accelerating. If they were already on the same orbit, they could have just approached, using their fuel to try to evade the interceptor missiles, and of course decelerated to be able to match their speed with Elysium's habitat ring.

Elysium itself was nice, but boring. The idea of the habitat lacking a "ceiling" is interesting. The centrifugal force might not be able to hold the atmosphere against the habitat in real life, but if Elysium was larger, it might. In any case, the construction and early evolution of Elysium might be a good topic for a comic book treatment (and another movie?).

Even though the supporting cast was excellent, the characters of Damon and Foster did much for the film to appear like another bland blockbuster. Production design by Philip Ivey was excellent, and he was the production designer for District 9 as well.

Social commentary? Just like in District 9, there is a lot, sometimes even stereotypical (overpopulation, electronic music). The director readily says this is an allegory of the world today. Maybe that justifies some of the blockbuster approach, to appeal bigger audience and introduce them to the scifi world that is not too far away from our reality?

The ending was nice with the medical shuttles. It's difficult to say how well Elysium's resources would have helped Earth's population, but the ending implies they now get the equal treatment. Much of the film I was wondering whether Elysium was like royal courts of Middle Ages where a very small minority of population enjoyed high standards of living, with art and sciences supported by them, with no means to actually spread that wealth to the ordinary folk ravaged by plague and famine.