Hot Topic: HayabusaâDust from ItokawaThe Japanese Hayabusa spacecraft returned to Earth on 13 June 2010 carrying within it a precious but invisible cargo - 1534 particles of dust from the surface of the asteroid Itokawa, which the spacecraft visited in 2005. These particles, up to 180 micrometer in size, are the first material ever fetched from an asteroid and returned to Earth for laboratory anal
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