Imaging science subsystems - Takes pictures in visible, near-ultraviolet, and near-infrared light.

Cassini radar - Maps the surface of Titan using radar imager to pierce veil of haze and also using it to measure the heights of the surface features.

Radio science subsystem - Searches for gravitational waves in the universe; studies the atmosphere, rings,and gravity fields of Saturn and its moons by measuring telltale changes in radio waves sent from the spacecraft.

Ion and neutral mass spectrometer - Examines neutral and charged particles near Titan, Saturn, and the satellites to learn more about their extended atmospheres and ionospheres.

Visual and infrared mapping spectrometer - Identifies the chemical composition of the surfaces, atmospheres, and rings of Saturn and its moons by measuring colors of visible light and infrared energy given off by them.

Composite infrared spectrometer - measures infrared energy from the surfaces, atmospheres, and rings of Saturn and its moons to study their temperature and composition.

Cosmic dust analyzer - Studies ice and dust grains in and near the Saturn system.

Radio and plasma wave science - Investigates plasma waves (generated by ionized gases flowing out from the Sun or orbiting Saturn), natural emissions of radio energy, and dust.

Cassini plasma spectrometer - Explores plasma (highly ionized gas) within and near Saturn's magnetic field.

Ultraviolet imaging spectrograph - Measures ultraviolet energy from atmosphere and rings to study their structure, chemistry and composition.

Magnetospheric imaging instrument - Images Saturn's magnetosphere and measures interactions between the magnetosphere and the solar wind, a flow of ionized gases streaming out from the Sun.

Dual technique magnetometer - Describes Saturn's magnetic field and its interactions with the solar wind, the rings, and the moons of Saturn.