Neil deGrasse Tyson often explains that alien life is likely to be **carbon-based**

Neil deGrasse Tyson often explains that alien life is likely to be **carbon-based**—just like us—because of carbon’s unmatched versatility in forming complex molecules. On the periodic table, carbon sits above silicon, meaning both elements share similar bonding properties. But here’s the catch: **carbon forms stronger, more flexible bonds**, allowing for the intricate molecular structures needed for life—like proteins and DNA.

Silicon, while chemically similar, tends to form rigid and less stable compounds. It also reacts quickly with oxygen to form silicates (basically, rocks), making it harder to sustain dynamic biological processes. Tyson and other scientists argue that even though science fiction loves the idea of silicon-based aliens, **carbon wins out in both abundance and chemical adaptability** across the universe.

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