Ryugu is a 0.62 mile-diameter asteroid located 190 million miles from the Earth
The Japan Aerospace Exploration Agency s Hayabusa2 mission visited it in 2019
Hayabusa2 brought back rock samples from two different sites on the asteroid
These were dropped in the Australian Outback on Dec. 5 and are being analysed
Grains from Ryugu revealed last week had been collected from a different locale