______ country’s satellite Hayabusa-2 has started a journey to return to Earth from an asteroid named Ryugu ?

a) North Korea
b) South Korea
c) China
d) Japan

The Japanese space organization’s (JAXA) spacecraft Hayabusa-2 reached the asteroid Ryugu, 300 million kilometers from Earth, after a three-and-a-half-year journey. It has collected some samples of the asteroid and now it is returning to Earth.