NASA has a long history of collecting samples from space and delivering them to Earth, and this practice continues to provide valuable scientific insights. The first mission to gather space samples was NASA’s Apollo 11 mission in 1969, which brought back 842 pounds of rocks and dust from the Moon. These samples provided unprecedented information about the formation of our planet and solar system.
In 2004, NASA’s Genesis spacecraft collected charged particles from the solar wind, which revealed surprising differences in isotopes compared to Earth. This suggested that the Sun and planets formed from different materials.
NASA’s Stardust mission in 2006 collected dust particles from the coma of comet Wild 2, including the amino acid glycine. This discovery supported the theory that life’s building blocks can form in space and be delivered to Earth by comets and asteroids.
The study of asteroid samples began with JAXA’s Hayabusa mission in 2010, which brought back thousands of particles from asteroid Itokawa. Hayabusa2 followed in 2020 with samples from asteroid Ryugu. These samples provided insights into the structure, composition, and organic molecules present in asteroids.
Currently, NASA’s OSIRIS-REx spacecraft is on its way back to Earth with samples from asteroid Bennu. These samples will allow scientists to study the complete chemical makeup of Bennu and understand its history of water and organic matter.
Looking ahead, JAXA’s MMX mission will study the Martian moons Phobos and Deimos up close and collect surface samples from Phobos. These samples will be delivered to Earth in 2029 and provide insights into the evolution of Mars and its moons.
NASA and ESA are also planning a multi-mission campaign called Mars Sample Return. This campaign aims to bring back samples collected by NASA’s Mars 2020 Perseverance rover from an ancient river delta in Jezero Crater. This coordinated effort involves multiple spacecraft and launches and will allow scientists to analyze Martian material with advanced technologies on Earth.
Overall, the collection and analysis of space samples have played a crucial role in expanding our understanding of the origins of our planet, the solar system, and the potential for life beyond Earth.
