Near-Earth Asteroid Scout or NEA Scout is a miniature spacecraft that will be launched by NASA to collect data from a near-Earth asteroid. This will be the US first interplanetary mission using a special solar sail propulsion, which supports lightweight spacecraft that cannot carry large amounts of conventional rocket propellant.
The probe will use stainless steel alloy booms and deploy an aluminium-coated sail measuring 925 square feet. The sail will generate thrust by reflecting sunlight to enable a gentle and ceaseless push. This constant thrust can speed up the spacecraft over time to hasten its movement towards the target asteroid.