Description

How do we search for extraterrestrial life: sample- return missions, interstellar communications (radio/laser), biosignatures (atmospheric traces on exoplanets) and technosignatures? What do exoplanet discoveries and Webb Space Telescope results tell us? Do widespread precursors make the universe conducive to life? Could the 3rd detected interstellar object transiting our solar system, comet 3I/Atlas, be an alien craft? Is silicon life possible (Star Trek Horta)? Could life exist as city-sized atmospheric jellyfish, clouds of ionized gas or be powered by nuclear reactions? Explore these topics in a fascinating introduction to what we know, suspect and speculate about life in the universe.