Sizing up a planet's habitability — Harvard Gazette

Researchers have redefined the lower size limit for planets to maintain surface liquid water for long periods of time, extending the so-called habitable zone for small, low-gravity planets.

An Earth-Sized Planet in the Habitable Zone of a Cool Star

What is the escape velocity of an earth-like planet with no

Impact and habitability scenarios for early Mars revisited based

In distant space, a water world — Harvard Gazette

United Nations Human Settlements Programme (UN-Habitat)

What is the escape velocity of all planets? - Quora

A Pragmatic Model to Conserve Land

Is it possible to create an escape-proof planet? - Quora

The Four Quadrants do not mean what you think they mean

This Planet Is Too Big to Exist

Why do denser planets have greater escape velocities? - Quora