Cosmic Civilizations

Explore the biggest questions in space, alien life, and future humanity.

Start with beginner-friendly topic guides, then jump into the debate, read the latest Space News, or submit your own cosmic theory.

Kardashev Scale

Learn how civilizations are measured by energy use, from Type I to Type III and beyond.

Explore the search for life beyond Earth, biosignatures, exoplanets, and the Fermi Paradox.

Discover planets beyond our Solar System and why some may be promising targets for life.

Understand the challenges and possibilities of building human settlements on Mars.

Explore black holes, event horizons, gravity, and some of the most extreme objects in the universe.

Think through humanity’s future across the Moon, Mars, orbital habitats, and beyond.

Read the latest discoveries, take the civilization quiz, or submit your own theory about humanity’s future in the cosmos.