The last time Hayabusa2 was seen with the naked eye, Barack Obama was president of the United States and Brexit was a distant Europhobe fantasy.
Six years and three days after its groundbreaking mission began, the Japanese spacecraft will drop a capsule onto the Australian outback carrying pristine asteroid fragments that scientists believe could shed light on the formation of the solar system and the origins of life.
By the time it reaches the skies high over Woomera, South Australia, in the early hours of Sunday, the probe will have completed a round-trip of around 6bn km (3.7bn miles) that included two brief stops on the surface of a moving asteroid.
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The unmanned craft will release the capsule from a height of about 220,000km (136,700 miles), the Japan Aerospace