This Week In Space Episode 220 marks the 50th anniversary of Viking 1 with guests Dr. Pascal Lee and Dr. Penny Boston. The hosts discuss current launch developments — SpaceX's planned Starship Flight 13 amid a Starbase land-swap legal dispute and a Long March 3B rocket struck by lightning that still succeeded. The conversation reexamines Viking’s ambiguous life-detection experiments, the role of perchlorates in shifting interpretations, and Viking’s lasting influence on Mars exploration.
This Week In Space — Episode 220: First On Mars — Viking 1 at 50
Credit: TWiT
On Episode 220 of This Week In Space, hosts Rod Pyle and Tariq Malik are joined by planetary scientist Dr. Pascal Lee and astrobiologist Dr. Penny Boston to mark the 50th anniversary of Viking 1's landing on Mars.
Current Launch News
The episode opens with breaking launch coverage: SpaceX is preparing to attempt the critical Starship Flight 13 test after previous delays, a campaign unfolding amid a legal dispute over a proposed land swap at the Starbase facility in South Texas. The hosts also discuss dramatic footage of a Chinese Long March 3B rocket being struck by lightning during ascent — an event that, despite stunning visuals, did not prevent the vehicle from delivering its payload to orbit.
(Image credit: Celestron)
Viking 1: Revisiting a Controversial Milestone
The core of the show revisits the Viking 1 lander and its pioneering biological experiments. The conversation traces Mars exploration from the early Mariner flybys through Viking's ambiguous life-detection results and the decades-long debate they sparked. Guests explain how later discoveries — notably perchlorates in Martian soil — changed interpretations of Viking's experiments and fueled intense scientific rivalry and reanalysis that influenced subsequent missions.
The discussion places Viking's findings in historical context and considers how that legacy continues to shape modern Mars science, habitability studies, and mission planning. Listeners get a clear sense of why Viking remains central to questions about life on Mars and how new instruments and missions build on lessons learned in the 1970s.
Extras, Resources, and Gear Picks
The episode closes with listener resources and subscription information. You can download or subscribe to This Week In Space via your favorite podcast app; ad-free episodes are available through Club TWiT. The hosts also highlight gear for amateur astronomers: the Celestron Astro Fi 102 as a top beginner telescope pick, and an Estes launchable scale model of the Falcon 9 for fans who want a hands-on replica (a discount code was mentioned by episode partners).
Where To Listen: Subscribe to This Week In Space at twit.tv/shows/this-week-in-space or follow on your preferred podcatcher. New episodes publish every Friday.
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