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They found that, contrary to intuition, the reflectance was highest when the individual particles were separated instead of when tightly packed.

They trace these electrons by mapping out the "reflectance" of the sample, or the percentage of light they reflect.

However, other studies have contradicted this by revealing a significant difference in reflectance spectra between Ryugu samples and CI chondrites.

Although Galileo attempted to ascertain their composition using reflectance spectroscopy, it was unsuccessful.

The techniques included X-ray fluorescence imaging spectroscopy and reflectance hyperspectral imaging, which uses a light-dispersing spectrometer to collect and process information from across the electromagnetic spectrum.