Both Andy Weir (author of The Martian, Artemis, and Project Hail Mary) and Rob Manning (Chief Engineer at the Jet Propulsion Laboratory) were shooting the you-know-what as they chatted about science fiction books they read as teenagers, the role of real science in fictional tales, astronomical conspiracy theories, and mankind’s need to expand into the unknown.
It was interesting to hear Andy Weir talk about curiosity being humanity’s survival mechanism. He pointed out that curiosity has allowed humanity to survive disasters here on Earth because we were all spread out rather than clustered on one flood plain. The same applies to expansion beyond the Earth.
Check it out for yourself. You may want to check out some of the earlier podcasts as well, such as:
On a recent episode of the Clear + Vivid podcast, Alan Alda interviewed NASA engineer Les Johnson about his efforts to develop a solar sail that can take us to the stars. He is the Principal Investigator for the NEA Scout, which was launched into space during the Artemis I mission and is now heading towards a near-Earth asteroid via solar sails (see above).
During the interview, Mr. Johnson discussed the NEA Scout as well as his hopes for future human travel to the stars using solar sails, noting that while slow, the sails can outperform modern rocket engines in the long-run. He also pointed out that a solar sail may be able to get us to Proxima Centauri, the closest neighboring star, in hundreds of years versus the 70,000 years it will take the Voyager spacecraft to travel that same distance. I like how he puts such a mission in perspective, pointing out it took hundreds of years to build some of the great cathedrals.
Messrs. Alda and Johnson also discussed the ethics of space travel considering astronauts will be spending generations in space with many humans never seeing either the Earth or the destination in their lifetime. Mr. Johnson said space lasers may be another option for interstellar travel at some point in the future, reducing the travel time to Proxima Centauri to 40-50 years. Given the time spans, he said it may make sense to initially send robots into space first.
Finally, the podcast covered missions closer to Earth, such as mining asteroids for water and minerals, as well as 3D printing to create what we need in space. It sounded a lot like the situation in find in the science fiction TV series The Expanse.
Overall, it was a great conversation worth a few minutes of your day. Check it out.
Extra: Mr. Johnson is also the author of several books, including the co-authored Saving Proxima. Here is a quick summary of that tale:
2072. At the lunar farside radio observatory, an old-school radio broadcast is detected, similar to those broadcast on Earth in the 1940s, but in an unknown language, coming from an impossible source—Proxima Centauri. While the nations of Earth debate making first contact, they learn that the Proximans are facing an extinction-level disaster, forcing a decision: will Earth send a ship on a multiyear trip to render aid?
Interstellar travel is not easy, and by traveling at the speeds required to arrive before disaster strikes at Proxima, humans will learn firsthand the time-dilating effects of Einstein’s Special Relativity and be forced to ponder ultimate questions: What does it mean to be human? What will it take to share the stars with another form of life? What if I return younger than my own children? The answers are far from academic, for they may determine the fate of not one, but two, civilizations.
Image: Chesley Bonestell art printed in “The Conquest of the Moon” (1953). Mr. Bonestell’s art is mentioned in the Moonrise podcast.
If you are looking for a good story that you to listen to during your next car trip, you cannot do better than the Washington Post’sMoonrise podcast. It has a bit of everything, including science fiction stories, Nazi war machines, Russian persecution, American post-WWII politics, and a bit of astronomy as well.
Here is how the program sells itself:
Want to uncover the real origin story behind the United States’ decision to go to the moon? In the 50 years since the moon landing, as presidential documents have been declassified and secret programs revealed, a wild story has begun to emerge. “Moonrise,” a Washington Post audio miniseries hosted by Lillian Cunningham, digs into the nuclear arms race of the Cold War, the transformation of American society and politics — and even the birth of science fiction — to unearth what really drove us to the moon. Come along with us on a fascinating journey from Earth to the moon.
You can learn how President Kennedy tried to get the Soviet Union to join the Apollo program – twice. You can also hear about the Apollo 11 mission competing with a Soviet spacecraft trying to land on the Moon at the same time. And have you heard about the civil rights protests at the Apollo 11 launch site?
The podcast is a well crafted story trying to weave together many threads in a mostly successful way. It is still astonishing that the early Space Race was really lead by a former Nazi representing the United States and a former political prisoner representing the Soviets. Today the Apollo story is mostly a warm blur from the past, but I believe it is worth your time to listen to the full story. It is the foundation of our space exploration efforts, for better or worse.
Here is a podcast if you like the debate format so you can listen to both sides before settling on your own position. Intelligence Squared has great discussions involving experts on a multitude of topics, but few touch upon astronomy. Hence, this is an episode worth sharing.
Here is the set up for this debate:
For decades, scientists around the world have dedicated their lives — and research dollars — to one question: Is there anyone else out there? In the early 1970s, NASA joined the hunt with its own program to search for extraterrestrial life, or SETI for short. When that was defunded by Congress, private efforts took hold. But just what have decades of SETI brought us? And how should we approach the search in those to come? For SETI’s supporters, finding other intelligent life in the cosmos is a fundamentally human endeavor. It probes our understanding of the cosmos, what it means to live and survive on Earth and beyond, and just where our species fits into the greater universe. But others warn that SETI is a distraction from other scientific endeavors that, at best, diverts critical resources and, at worst, will open a can of worms humanity isn’t ready to deal with. Just what would happen if we actually find other beings? Are we mature enough as a society to respond? In this episode, we ask the essential extraterrestrial question: to search or not to search?
The two experts debating this topic are:
Jill Cornell Tarter is an American astronomer best known for her work on the search for extraterrestrial intelligence. Tarter is the former director of the Center for SETI Research, holding the Bernard M. Oliver Chair for SETI at the SETI Institute.
Paul M. Sutter is a cosmologist and community outreach coordinator with the Department of Astronomy at Ohio State University. Sutter is also the chief scientist at the Center of Science and Industry in Columbus, Ohio.
I expect most of those visiting this page already have a strong opinion on this topic, but it is worth listening to the debate among these two experts anyway. Enjoy.
Image (Credit): “How to Terraform Venus (Quickly)” video. (Kurzgesagt)
In a recent Clear+Vivid podcast episode, Alan Alda interviewed Philipp Dettmer, who is the CEO of the online science channel Kurzgesagt (German for “in a nutshell”). Mr. Dettmer discussed his difficulties with school as a child, his eventual love of learning, and his desire to help others to learn.
I recommend you listen to his story on the podcast, but also explore the various videos on his Youtube site, including a number of them that deal with astronomy, such as:
Our Awesome Universe 