Dust grains reveal asteroid Itokawa’s age

Dust grains reveal asteroid Itokawa’s age

On June 13, 2010, Japan’s asteroid-visiting Hayabusa spacecraft earned its name (“peregrine falcon”) by divebombing through Earth’s atmosphere at 7.5 miles (12.2 kilometers) per second. As expected, the spacecraft disintegrated upon re-entry; however, a heat-shielded sample-return capsule survived the fall relatively unscathed, returning a plethora of precious dust grains collected Continue Reading