1) Japan
2) China
3) Russia
4) US
Explanation:
On 25th April 2019, Japanese scientists have successfully created the first-ever artificial crater on an asteroid, which gave some clue on how the solar system evolved. Japan creates world’s 1st artificial crater on asteroid.Yuichi Tsuda, who is the project manager of Hayabusa2 confirmed the crater from images captured by the probe located 1,700 meters (5,500 feet) from the asteroid’s surface.Hayabusa2 space probe shot a projectile at the Ryugu asteroid around 340 million kilometers from Earth, as part of the probe’s mission to explore the origin of life and the evolution of the solar system.