When we think of extraterrestrials, our minds generally go from the latex-suited bipedal aliens seen in Star Trek and Star Wars to more exotic critters in sci-fi movies. Scientists think in terms of carbon-based microbial life and other lower life forms. But some researchers, such as Mikhail Tikhonov from Washington University, suggest that life can take more unusual forms, ones we might not even recognize. He further suggests a new definition of life: something that takes in and transforms energy and replicates. His ideas radically expand our notions of alien life and how it might be recognized.
Headlines:
Space Shuttle Endeavour's New Launch Configuration Exhibit Debuts
SpaceX Prepares for Starship Flight 15's First Attempted Double Landing
Risks and Stakes for SpaceX's Reusable Starship Program
Main Topic: Searching for Alien Life—Redefining the Approach
Origins and motivations for thinking differently about our definition of life
Traditional "follow the water" strategy versus seeking energy as life's marker
Challenges in recognizing non-Earth-like life forms
Signature of life through energy use and ecological patterns
Implications for planetary exploration and sampling, including Mars, Europa, and Venus
Theoretical examples and sci-fi inspirations for nontraditional life
Current research intersections between physics and microbial ecology
Limits, opportunities, and philosophical implications of agnostic biosignature searches
Hosts: Rod Pyle and Tariq Malik
Guest: Mikhail Tikhonov
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