Скачать или смотреть Life Without Water? Silicon-Based Life? Astrobiology Beyond Earth

Are we alone in the Universe?

Whenever we look at the stars, the question seems inevitable. But before searching for life beyond Earth, we must first ask: what exactly is life?

In this video, we explore different scientific definitions of life — physiological, metabolic, and biomolecular — and examine whether Earth’s “recipe,” based on carbon, water, and DNA, is truly the only possible one.

🌌 Could life exist:

Without water?

Based on silicon instead of carbon?

Using ammonia or methane as a solvent?

With mirror biochemistry (opposite chirality)?

Adapted to stars different from our Sun?

Drawing from classic and contemporary astrobiology research (Davies, Kiang, Schulze-Makuch, Venturolli), we discuss the fundamental requirements for life: chemical complexity, an external energy source, and a liquid medium for reactions to occur.

And we leave you with a crucial question:

👉 Would we be able to recognize life if it were fundamentally different from us?

Based on a lecture by Prof. Dr. Luís Gustavo Galego
Department of Biological Sciences – UFTM (Brazil)