Franklin Chang-Díaz

Welcome to Part 2 of our interview with father and daughter team Franklin Chang-Diaz, NASA astronaut and founder of the Ad Astra Rocket Company™, and Miranda Chang, Ad Astra’s Global Communications Director. We pick up where we left off, with a focus on fathers working with their children! Host Charles Liu shares how much he loves doing The LIUniverse with his co-host and son Allen, while Franklin talks about how important Miranda is to the running of Ad Astra. Then it’s on to our next question, from Ebony, who asks, “Do you believe that traveling to space can find ways to fix the problem with climate change?” Franklin begins by reminding us that we would not be aware of climate change if we were not exploring space. And then he describes how the life support system on spaceship Earth is in need of a great deal of maintenance and repair, how at some point there will be more humans than can survive on it, and how he worries that we will damage our environment to the point that our civilization won’t be healthy enough to explore space and then we will be doomed. In Costa Rica, Ad Astra is working to transition the country to a green, hydrogen economy. Using solar and wind energy, they generate hydrogen from water, to power their fleet of hydrogen-powered vehicles and fuel cell electric buses. Miranda points out that Costa Rica’s electric grid is already nearly 100% renewable, making it a perfect based for doing test projects like these with the goal of reducing carbon. Miranda discusses ways to make the economy of space more sustainable, too, and describes the fuel efficiency of the VX-200 VASIMIR engine (Variable Specific Impulse Magnetoplasma Rocket), their new high-power, electric in-space propulsion system that will have a thirteen-year lifespan. Chuck asks Franklin how me made the transition from astronaut to environmentalist. Franklin explains how the Overview Effect impacted him, and how he came back from space with a tremendous awareness of our environmental problem. Charles brings up the differences between the Gaia Hypothesis and the Medea Hypothesis, which says the Earth may be out to get us and will be fine without us. Somehow, the conversation leads to “The Inner Light” – one of the most beloved episodes of Star Trek The Next Generation , which had tremendous but differing impacts on Franklin and Charles. In the episode, a civilization ignores climate change to the point where it is too late for them to do anything except memorialize their lives and their fate. Miranda talks about the unifying impact of space exploration, and the necessary realization we must reach if we are to survive that we are one species all in this together. Finally, we turn to VASIMIR. Chuck wants to know how it will change our lives, and Franklin likens it to the trucking business that sprung up after WWII because of the availability of diesel engines. As of right now, he explains that we don’t have an equivalent for space: “We still fly to space in cannonballs.” What we want, he says, is powered flight over longer periods of time, which VASIMIR makes possible, changing the entire economics of space and enabling humans and the private sector to engage in sustained activity in space. Franklin explains how VASIMIR may someday reduce the time from the Moon to Mars from 8 months to 2 months or less and catalyze the next period of humanity’s expansion into our solar system. In fact, it turns out that the engine Andy Weir used in his book The Martian was based on VASIMIR! To find out more about Ad Astra, visit their website, www.adastrarocket.com , or follow them on social media at @adastrarocket on YouTube, Instagram and Twitter, and @asastrarocketcompany on Facebook and LinkedIn. We hope you enjoy this episode of The LIUniverse, and, if you do, please support us on Patreon. Credits for Images Used in this Epi

When humanity heads out for the stars, what will be powering our spacecraft? To find out, Dr. Charles Liu and co-host Allen Liu welcome father and daughter team Franklin Chang-Diaz, NASA astronaut and founder of the Ad Astra Rocket Company™, and Miranda Chang, Ad Astra’s Global Communications Director for Part 1 of this two-part episode. (We’ll be posting Part 2 next Saturday!) As always, though, we start off with the day’s joyfully cool cosmic thing. Lucy, the robotic NASA mission to the asteroid belt, just passed by its first asteroid Dinkinesh (which has been given the Ethiopian (Amharic) name for the human-ancestor fossil known as Lucy and means “You are marvelous”!). As it did so, it discovered Dinkinesh is actually a double asteroid, in that it has its own orbiting moon, Selam, but that’s not all: Selam is a contact binary, meaning it’s actually two distinct bodies touching each other but not connected. Next, we turn from discovering asteroids to visiting them, and that’s where Franklin and Miranda come in. Franklin spent 25 years at NASA. He was one of the ninth group of astronauts, the class of 1980, and flew 7 missions in space, the most spaceflights anyone has taken to date. An astronautic jack-of-all-trades engineer, physicist and more who describes himself as a “glorified plumber/electrician”), Franklin flew on each of the Space Shuttles except the Challenger, visited the Soviet space station Mir, took 3 spacewalks and even helped build the International Space Station. Miranda tells us about Ad Astra’s flagship program, the VX-200 VASIMIR engine (Variable Specific Impulse Magnetoplasma Rocket), a new type of high-power, electric in-space propulsion. They’re vastly more powerful (compare a hair dryer to a diesel engine) and more efficient than existing ion propulsion systems. We jump right into audience questions with one from Mohammed, who asks, “Engineering is problem solving. What happens when you can’t solve the problem?” According to Franklin, “In space, you work the problem until you find a solution and you never stop...eventually, you have to find something.” Miranda adds, “The whole idea of engineers is that there is never “no solution”...The are always working to find a solution...every time I think we’re don, there is no solution for that, they have like three...” Franklin also takes on the NASA mantra, “Failure is not an option.” In his experiences, “Failure is how you learn.... giving up is not an option.” You’ll also hear about Miranda’s role and how creative storytelling is a critical aspect of helping people understand the complex technical realities of space exploration and the advanced propulsion systems and orbital mechanics Ad Astra deals with. Miranda explains how Franklin got into the science of propulsion, and how he had started working on the VASOMIR engine even before he joined NASA. He was an engineer who spent a lot of time in the physics laboratory, and he came from Costa Rica specifically to become an astronaut during the burgeoning interest in space exploration during the period of the Apollo program. That’s it for Part 1. Please tune in next Saturday for the conclusion. We hope you enjoy this episode of The LIUniverse, and, if you do, please support us on Patreon. Credits for Images and sounds Used in this Episode: – NASA’s 1980 astronaut group, including Franklin – NASA, public domain – Lucy spacecraft – NASA, public domain – Lucy/Dink’inesh fossil – 120 on Wikimedia commons, CC BY 2.5 – Dinkinesh and its moon Selam – NASA/Goddard/SwRI/Johns Hopkins APL/NOAO, public domain – Dinkinesh and Selam from the side – NASA/Goddard/SwRI/Johns Hopkins APL, public domain – Franklin on a spacewalk (EVA) – NASA, public domain – Canadarm 2 on the ISS – NASA, public domain – Ad Astra’s VX-200 VASIMR test engine – Ad Astra Rocket Company™, from online media gallery – NEXT, a