Discovery is an ongoing program that offers the scientific community the opportunity to assemble a team and design exciting, focused investigations that complement NASA's larger planetary science explorations

Mars Exploration

The Mars Exploration Program is a science-driven program that seeks to understand whether Mars was, is, or can be, a habitable world.

New Frontiers

The New Frontiers Program represents a critical step in the advancement of solar system exploration.

Outer Planets Flagship

The Galileo and Cassini missions to Jupiter and Saturn have greatly deepened our understanding of those giant planets and their intriguing moons.

Robotic Lunar Exploration

The Vision for Space Exploration is fostering a renaissance in lunar science, as the return of humans to the Moon both requires and enables greater scientific understanding of Earth’s natural satellite.


Small spacecraft and satellites help NASA advance scientific and human exploration, reduce the cost of new space missions, and expand access to space. Through technological innovation, small satellites enable entirely new architectures for a wide range of activities in space with the potential for exponential jumps in transformative science.

Solar System Exploration Research Virtual Institute

Recognizing that science and human exploration are mutually enabling, NASA created the Solar System Exploration Research Virtual Institute (SSERVI) to address basic and applied scientific questions fundamental to understanding the Moon, Near Earth Asteroids, the Martian moons Phobos and Deimos, and the near space environments of these target bodies.