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The Search for a Second Earth

Exploring exoplanets with Earth-like characteristics

Made by Jason Charwin•Source

Data Visualizations

Earth
GJ 1132 b

Distance from Earth in the radial menu reflects overall similarity across all measured characteristics: Radius, Mass, Insolation, Equilibrium Temperature, Stellar Effective Temperature, and Orbital Eccentricity. Planets closer to the center are more Earth-like.

The interactive menu places planets by similarity to Earth—planets closer to the center are more similar to our home world. The radar chart axes show the absolute normalized difference from Earth's values; a smaller radius indicates a more Earth-like planet across the measured characteristics.

Planet Density Distribution

Planet densities are computed from reported mass and radius measurements. We classify planets with density ≥ 3 g/cm³ as terrestrial and those below as gaseous. The overlapping bars show the distribution for each classification, helping us understand the composition diversity of exoplanets in our dataset.