RT @RonBaalke: Asteroid 162173 Ryugu – the target of Hayabusa 2 – makes its closest approach to Earth today (0.4 AU) https://t.co/PpD35zNMFV
RT @RonBaalke: Asteroid 162173 Ryugu – the target of Hayabusa 2 – makes its closest approach to Earth today (0.4 AU) https://t.co/PpD35zNMFV