Discover published sets by community

2009, Earth-trailing heliocentric orbit, Discovered thousands of exoplanets in a small region of the Milky Way

2003, Mars, Discovery of evidence that water once flowed on the planet's surface

2016, Asteroid Bennu, Mission to return a sample of the primitive asteroid to Earth

2006, Pluto and the Kuiper Belt, First close-up images of Pluto showing mountains, glaciers, and blue skies

2004, Comet 67P/Churyumov–Gerasimenko, First spacecraft to orbit a comet and deploy a lander

2011, Jupiter, Enhanced understanding of Jupiter’s atmosphere and magnetic fields

1964, Mars, First successful flyby of Mars, returned the first pictures of the Martian surface

2007, Vesta and Ceres in the Asteroid Belt, First mission to orbit two extraterrestrial bodies, high-resolution mapping of Vesta and Ceres

2011, Mars, Found evidence of ancient freshwater environments that were possibly habitable

1997, Saturn and its moons, Discovery of water-ice geysers on Enceladus and seasonal changes on Titan

1975, Mars, First successful landing on Mars, searched for biosignatures

1999, High Earth Orbit, High-resolution X-ray imaging of high-energy regions and phenomena in space

2004, Mercury, First spacecraft to orbit Mercury, mapped the planet's surface

1969, The Moon, First manned Moon landing

1977, Outer Solar System & Interstellar Space, Discovery of active volcanism on Io and detailed images of other Jovian moons

1990, Low Earth Orbit, High-resolution images of distant stars, galaxies, nebulae

1989, Jupiter, Provided detailed data about Jupiter and its moons including evidence of an ocean beneath Europa's icy crust

2021, Sun-Earth L2 Lagrange Point, Infrared observations of the earliest galaxies, stars, and planetary systems

2018, The Sun, Closest approach of any human-made object to the Sun