Cassini orbiter released the Huygens probe, which successfully landed on Saturn’s moon Titan.
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The super-bright comet 'Hale-Bopp' reached its closest point to Earth at a distance of 1.215 AU, making it visible to the naked eye.
After seven months of travel, the Mars Reconnaissance Orbiter arrived safely to Mars.
NASA's Ingenuity helicopter became the first helicopter to fly on another planet.
NASA's Lunar Prospector spacecraft was deliberately crashed into the Moon’s south pole.
Osiris became the first discovered exoplanet with an atmosphere.
