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To observe celestial objects with minimal atmospheric interference, producing high-resolution images. Has significantly contributed to our understanding of the universe, including the Hubble Deep Field.

Primary objectives were to study the outer solar system and interstellar space. Has provided the first detailed images of the outer planets and their moons. Now in interstellar space.

To discover Earth-like planets orbiting other stars. Identified thousands of exoplanets, some in habitable zones where liquid water could exist.

To study the outer corona of the Sun and improve our understanding of solar wind and space weather. It's the closest human-made object to the Sun.

To study cosmic history from the first luminous glows after the big bang to the formation of solar systems. Successor to the Hubble Telescope, designed for infrared astronomy.

To observe X-rays from high-energy regions of the universe. Has imaged supernova remnants, galaxy clusters, and black holes, and helped to understand their structure and composition.

To study the outer planets and beyond, providing vital data about Neptune and Uranus. Continues to communicate with Earth and contribute to our understanding of the outer solar system.

To explore the Martian surface, analyze rocks, and determine the planet's habitability. Confirmed the past presence of water and found complex organic molecules.

To study Saturn, its rings and moons, with a particular focus on Titan. Revealed new knowledge about the giant planet's atmosphere and the surface of Titan.

To perform a flyby of Pluto and its moons, then explore other objects in the Kuiper Belt. Sent back high-resolution images and data that led to a new understanding of Pluto's landscape.

To understand the origin and evolution of Jupiter, looking into its composition, gravity field, magnetic field, and polar magnetosphere. Revealed extraordinary images and data about the gas giant's atmosphere.

To observe the universe in the infrared spectrum, studying objects ranging from our solar system to distant galaxies. Provided an extensive infrared survey of the cosmos.

To explore Mars from orbit, studying its atmosphere, surface, and subterranean layers. Helps to identify landing sites and relay communications for Mars rovers.

To map the gamma-ray sky, studying sources such as blazars, gamma-ray bursts, and pulsars. Contributed to the discovery of terrestrial gamma-ray flashes associated with thunderstorms.