The Step-1 proposal due date is November 8, 2022. Step-2 proposals are due February 3, 2023.
The goal of the Habitable Worlds program is to use knowledge of the history of the Earth and the life upon it as a guide for determining the processes and conditions that create and maintain habitable environments. It is also to search for ancient and contemporary habitable environments and explore the possibility of extant life beyond the Earth.
NASA’s Habitable Worlds Program includes elements of the Astrobiology Program, the Mars Exploration Program, and the Outer Planets Program.