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
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.
The Mars Exploration Program is a science-driven program that seeks to understand whether Mars was, is, or can be, a habitable world.
The New Frontiers Program represents a critical step in the advancement of solar system exploration.
The Galileo and Cassini missions to Jupiter and Saturn have greatly deepened our understanding of those giant planets and their intriguing moons.
Near-Earth objects (NEOs) are asteroids and comets that orbit the Sun like the planets, but their orbits can bring them into Earth’s neighborhood - within 30 million miles of Earth’s orbit. Planetary defense is “applied planetary science” to address the NEO impact hazard.
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.
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.