A paper summarizing the initial analysis results of samples collected by the Japanese spacecraft "Hayabusa2" on asteroids has been published, and is drawing attention as the first result of sample analysis.
Regarding the sample of the asteroid "Ryugu" collected by the Japanese spacecraft "Hayabusa2", the project team of JAXA = Japan Aerospace Exploration Agency compiled the initial analysis results into two papers and published them in a scientific journal.
Among them, the density of the sample is as low as 1.2 kg per cubic meter, the porosity indicating the amount of gaps is as high as 46%, and the reflectance of light on the sample surface is 2%, which makes it look black. It is clear that.
Furthermore, the composition analysis found compounds that are formed when they react with organic substances and water, which is noteworthy as the first result of sample analysis.
The sample of "Ryugu" collected by "Hayabusa2" is distributed to the American group as well as the domestic group for analysis, and it is expected that detailed analysis results on water and organic matter will be published in the future. I am.