The Advanced Composite Solar Sail System (ACS3) is utilizing a 9-metre-wide solar sail designed to use solar wind for propulsion, allowing prolonged acceleration.
The satellite will be visible from London on select dates, particularly when weather conditions are favorable, appearing as a fast-moving star in the evening skies.
To see the ACS3, the best approach is to find a dark park away from streetlights, allowing your eyes to adjust before the flypast.
Observing the solar sail is contingent on its ability to catch sunlight; it may not always be visible depending on NASA's operational movements.
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