The Titan Mission That Could’ve Been

July 31, 2017

This is a follow-up to my recent post about NASA’s next flagship-class mission. There seemed to be a lot of interest in the comments about a possible mission to Titan and/or Enceladus, Saturn’s most famous moons.

The competition for flagship mission funding can get pretty intense. The Titan Saturn System Mission (or T.S.S.M.) was a strong contender last time around, as was a proposed mission to Europa, the most watery moon of Jupiter.

According to Titan Unveiled by Ralph Lorenz and Jacqueline Mitton, things got a little nasty when the Europa team started calling Titan “Callisto with weather,” the implication being that Titan was geologically boring.

Callisto, by the way, is a large by often overlooked moon of Jupiter.

Ultimately Team Europa won. NASA deemed their proposal to be closer to launch-readiness. Now after a few years delay due to a certain global financial meltdown, the Europa Clipper Mission appears to be on track for a 2022 launch date (fingers crossed).

As excited as I am for Europa Clipper, the mission to Titan would’ve been really cool too. It actually would have included three—possibly four—spacecraft.

  • A lake-lander to explore Titan’s liquid methane lakes.
  • A hot air balloon to explore the organic chemical fog surrounding Titan.
  • A Titan orbiter to observe Titan from space and also relay data from the lander and balloon back to Earth.
  • And a possible Enceladus orbiter, built by the European Space Agency, which would have tagged along for the ride to Saturn.

It’s a shame T.S.S.M. didn’t get the green light from NASA. Just think: we would’ve had so many cool things going on at once in the Saturn System, enough to almost rival the activity we’ve got going on on Mars!

But now once Europa Clipper is safely on its way (again, fingers crossed), Team Titan will have another shot at getting their mission off the ground.


Sciency Words: Type A Behavior Pattern

July 28, 2017

Today’s post is part of a special series here on Planet Pailly called Sciency Words. Each week, we take a closer look at an interesting science or science-related term to help us expand our scientific vocabularies together. Today’s term is:

TYPE A BEHAVIOR PATTERN

In my daily life, I’ve been hearing a lot about type A and type B personalities lately. Don’t know why. It just keeps coming up in conversations for some reason, but I’m never sure which one I’m supposed to be. Since these are scientific terms, I figured it was time I did some research.

Turns out that type A and type B were originally cardiology terms. They didn’t come from the field of psychology at all. Back in the 1950’s, some cardiologists noticed that they had two kinds of patients: those who sat calmly in the waiting room and those who fidgeted impatiently.

The fidgeters came to be known as “type A,” and they seemed to be more likely to have coronary disorders than the “type B” non-fidgeters. Soon a study was conducted. The type A behavior pattern (abbreviated T.A.B.P.) was further defined as “[…] an intense, sustained drive for achievement and as being continually involved in competition and deadlines, both at work and in their vocations.”

These were people with a lot of ambition, which isn’t necessarily a bad thing, but they also tended to stress themselves out. They got impatient easily, both with themselves and with others, and were sometimes prone to hostile behavior at work, home, or basically anywhere. With that in mind, the results of the study may not seem like a surprise: a clear corrolation between type A behavior and an elevated risk of high blood pressure and heart disease.

If you’re type A, don’t panic. There were some big problems with that initial study, most notably that it only sampled middle-aged men and failed to account for other key health factors like diet. Subsequent research on both men and women of all ages produced less conclusive results.

And yet debate continued for some time after that, possibly because of some undue influence by the tobacco industry. It seems tobacco companies surreptitiously funded more research on type A behavior then argued, both publically and in court, that personality types pose a greater health risk than cigarettes.

It seems cardiologists started abandoning this whole idea by the 1990’s. Psychologists still seem to use the terms, but sparingly. At this point, I’m not sure if the whole type A vs. type B thing is meaningful anymore, scientifically speaking; and yet a lot of people do seem to identify as one or the other.

So I don’t know. What do you think? Are type A and type B behavior patterns useful ways to describe people, or should we just let these terms go?

P.S.: If I must pick one or the other, I’m going to start telling people I’m type B, because I don’t fidget in waiting rooms.


Recommended Reading: Frank Herbert’s Dune

July 25, 2017

Over a month ago now, I was nominated for a Liebster award by awesome fellow blogger Ann W. Shannon (please check out her blog… it’s pretty awesome, especially if you’re a writer). Unfortunately I was mired in a research project at the time, and I never got around to accepting the award.

But Ann said she would still be interested in getting a book recommendation from me. Specifically, she asked “What is your favorite book? Why should I read it?” With that in mind, I’ve decided to launch a new semi-regular series called Recommended Reading, and today I’d like to recommend my #1 favorite book: Dune by Frank Herbert.

Okay, I realize not everyone will love Dune as much as I do. The book happened to connect with me for personal reasons. It gave me something I needed in my life at the moment when I needed it most. I have no idea if it will have a similar effect on other readers; I can only say this is the kind of book that’s capable of changing a person’s life and reshaping a person’s worldview.

The story is set in a world of medieval feudalism, except this is feudalism in space, with counts and dukes and barons ruling over entire planets rather than tiny parcels of land, and the “Emperor of the Known Universe” ruling over all. One of the noble families, House Atreides, is given control of an economically valuable planet by the Emperor, but this gift turns out to be a trap, part of a vast conspiracy to destroy the Atreides family for good.

Usually in science fiction, it seems you can either have good fiction or good science. In other words, you can either entertain your readers with a fun story or educate your readers about some interesting scientific concept. There are audiences for both of those things, but Dune is a rare example of how to do good science and good fiction at the same time.

Frank Herbert apparently did a ton of research on ecology and environmental science then used that knowledge to craft a beautiful and frightening alien world—the perfect stage for a deeply human drama. If you’re a writer—even if you’re not a science fiction writer—there’s a valuable lesson here about how to seamlessly incorporate research into a story.

Now some of you may have read Dune before. If so, I’d encourage you to read it again. I’ve read it five or six times now, and each time I get something different out of it. Dune is a classic revenge story, akin to The Count of Monte Cristo. It’s also a story about the temptation of power, similar in a way to The Lord of the Rings. It explores themes of political corruption, religious fanaticism (with distinctly Islamic flavoring), wars caused by resource scarcity, and a global climate in a state of change. You’d think this was an allegory of the many conflicts we face here in the 21st Century, except it was written over fifty years ago.

In fact, Dune feels so relevant to our modern world sometimes that you might say Frank Herbert was “prescient.” That’s a clever Dune reference, but you’ll have to read the book to get the joke.


Sciency Words: Tentacle

July 21, 2017

Today’s post is part of a special series here on Planet Pailly called Sciency Words. Each week, we take a closer look at an interesting science or science-related term to help us expand our scientific vocabularies together. Today’s term is:

TENTACLE

Believe it or not, octopuses do not have any tentacles. Zero. None. They have four pairs of arms, according to cephalopod experts.

When discussing cephalopod anatomy, arms are defined as shorter, more muscular appendages with suckers all the way along their length. Tentacles are longer and only have suckers at the “club-shaped” end. So octopuses have eight arms. Squid and cuttlefish have eight arms and two tentacles.

As a science fiction writer, I’ve created a few characters who have tentacles. Or at least, I think I have. But maybe my buddy Omglom here only has arms.

However, after doing further research I’ve found that this arms vs. tentacles thing is specific only to cephalopods. In a more generalized zoological sense, just about any boneless, flexible, elongated appendage can be referred to as a tentacle.

The word tentacle traces back to a Latin word meaning “to feel” or “to test” or “to probe.” This seems appropriate to me because in most cases tentacles aren’t really for grasping or manipulating objects. They’re sensory organs used for feeling, smelling, tasting, and even seeing (for example, the eyestalks of slugs and snails are considered to be tentacles).

There’s even a mammal with tentacles: the star-nosed mole, which has twenty-two tiny tentacles arranged in a star pattern around its snout. These tentacles are extremely sensitive feelers which help the star-nosed mole feel its way around as it burrows through the earth.

As for my friend Omglom… the gelatinoids of Rog aren’t cephalopods, so his tentacles can be called tentacles after all!

P.S.: It may sound strange, but the proper plural form of octopus is octopuses, not octopi. The cephalopod expert at the end of this video does an outstanding job explaining why.


NASA’s Next Flagship Mission

July 19, 2017

Let’s imagine you’re NASA. You have two big flagship-class missions coming up: one to search for life on Mars (launcing in 2020) and another to search for life on Europa (launching in 2022). These flagship missions are big, expensive projects, so Congress only lets you do one or two per decade.

After 2022, the next flagship mission probably won’t launch until the late 2020’s or early 2030’s, but still… now is the time for you to start thinking about it. So after Mars and Europa, where do you want to go next? Here are a few ideas currently floating around:

  • Orbiting Enceladus: If you want to keep looking for life in the Solar System, Enceladus (a moon of Saturn) is a good pick. It’s got an ocean of liquid water beneath it surface, and thanks to the geysers in the southern hemisphere, Enceladus is rather conveniently spraying samples into space for your orbiter to collect.
  • Splash Down on Titan: If there’s life on Titan (another moon of Saturn), it’ll be very different from life we’re familiar with here on Earth. But the organic chemicals are there in abundance, and it would be interesting to splash down in one of Titan’s lakes of liquid methane. If we built a submersible probe, we could even go see if anything’s swimming around in the methane-y depths.
  • Another Mars Rover: Yes, we have multiple orbiters and rovers exploring Mars already, but some of that equipment is getting pretty old and will need to be replaced soon. If we’re serious about sending humans to Mars, it’s important to keep the current Mars program going so we know what we’re getting ourselves into.
  • Landing on Venus: Given the high temperature and pressure on Venus, this is a mission that won’t last long—a few days tops—but Venus is surprisingly similar to Earth in many ways. Comparing and contrasting the two planets taught us how important Earth’s ozone layer is and just what can happen if a global greenhouse effect get’s out of control. Who knows what else Venus might teach us about our home?
  • Orbiting Uranus: This was high on NASA’s list of priorities at the beginning of the 2010’s, and it’s expected to rank highly again in the 2020’s. We know next to nothing about Uranus or Neptune, the ice giants of our Solar System. Given how many ice giants we’ve discovered orbiting other stars, it would be nice if we could learn more about the ones in our backyard.
  • Orbiting Neptune: Uranus is significantly closer to Earth than Neptune, but there’s an upcoming planetary alignment in the 2030’s that could make Neptune a less expensive, more fuel-efficient choice. As an added bonus, we’d also get to visit Triton, a Pluto-like object that Neptune sort of kidnapped and made into a moon.

If it were up to me, I know which one of these missions I’d pick. But today we’re imagining that you are NASA. Realistically Congress will only agree to pay for one or two of these planetary science missions in the coming decade. So what would be your first and second choices?


Going Up: Jupiter’s Auroras Get Weirder Than Ever

July 17, 2017

Last week, the Juno mission flew over Jupiter’s Great Red Spot and sent back some spectacular close-ups. But I’m not ready to talk about that. Not yet. I’m still catching up on the Juno news from two months ago.

Toward the end of May, NASA released a ton of fresh data from Juno, including new information about Jupiter’s auroras. Astro-scientists had previously known about two sources contributing to these auroras: the solar wind and the Io plasma torus. Now Juno may have discovered a third.

As Juno flew over Jupiter’s poles, it detected electrically charged particles flying up.

I can’t emphasize enough how weird this is. I wanted to write about it right away, but I held off doing this post because I was sure I must have misunderstood what I was reading.

Auroras are caused by electrically charged particles accelerated down toward a planet’s magnetic poles. These particles ram into the atmosphere at high speed, causing atmospheric gases to luminesce. At least that’s how it’s supposed to work. I guess nobody told Jupiter that.

In addition to the “normal” downward flow of particles from the Sun and Io, Jupiter’s magnetic field apparently dredges charged particles up from the planet’s interior and hurls them out into space. So Jupiter’s auroras are triggered by a mix of incoming and outgoing particles.

This definitely falls under the category of “further research is required.” Even now, I still feel like I must have misunderstood something. This is just too weird and too awesome to be true.

P.S.: As for the Great Red Spot, I’m waiting to hear something about the microwave data. We’re going to find out—finally!—just how far down that storm goes.


Sciency Words: Airglow

July 14, 2017

Today’s post is part of a special series here on Planet Pailly called Sciency Words. Each week, we take a closer look at an interesting science or science-related term to help us expand our scientific vocabularies together. Today’s term is:

AIRGLOW

Have you ever been floating in space, looked down at the Earth, and noticed a faint halo of green light around the planet? Me neither, but that light is there and it’s called airglow. Why’s it called that?

This is Anders Angstrom, a 19th Century Sweedish research and one of the founders of the science of spectroscopy. He’s the guy who, in 1868, first observed the airglow phenomenon.

As often happens in science, this was a serendipitous discovery. Angstrom was trying to study one thing when he accidentally discovered something else. He was using a spectroscope to measure the emission lines of the aurora borealis—or to put that in plain English, he was trying to find out precisely which colors make up the Northern Lights.

To Angstrom’s surprise, one of the aurora colors—a narrow band of green—was always present in the sky even when the aurora wasn’t happening. Angstrom couldn’t explain this, but over the coming decades other researchers would continue investigating this faint green glow, ruling out one possibility after another: it couldn’t be starlight, or moonlight, or light pollution….

Eventually scientists settled on an explanation involving chemistry. We now know that chemical reactions in the atmosphere release energy in the form of photons. The most noticeable reactions involve oxygen reacting with itself, producing photons of a specific wavelength, a wavelength corresponding to a narrow band of green light.

We’ve also observed airglow on other planets. The different colors we see on Venus, Jupiter, or Saturn can tell us a lot about the chemicals in those planet’s atmospheres. And some day a faint green emission line from an exoplanet may lead us to the discovery of alien life.

Image courtesy of NASA.

I opened this post from a vantage point in space, because as I understand it Earth’s airglow is a lot easier to see from up there. But it can be seen from down here on the ground too if you have sharp eyes, a good camera (or a good spectroscope), and know what to look for. Click here to learn more.