Methods Used to Capture and Return Samples from Asteroids

When it comes to capturing samples from asteroids, there are several methods that space missions employ:

Touch-and-Go Sampling

Touch-and-go sampling is a technique where a spacecraft briefly touches the surface of an asteroid to collect samples. This method is commonly used in asteroid sample return missions like NASA's OSIRIS-REx and JAXA's Hayabusa2.

Harpoons

Some missions opt to use harpoons to capture samples from asteroids. The harpoon is fired at the surface, and once it penetrates, it is retracted, bringing asteroid material back with it. This method has been considered for future asteroid sample return missions.

Drills

Drills are utilized to bore into the surface of the asteroid to collect samples from beneath the outer layer. This method allows for the collection of subsurface material, which can provide valuable insights into the asteroid's composition and history.

Each of these methods plays a crucial role in advancing our understanding of asteroids and the solar system as a whole. As technology continues to improve, scientists and engineers are exploring new and innovative ways to capture and return samples from asteroids to further our knowledge of these celestial bodies.