Saturday is International Asteroid Day, commemorating the Earth's largest recorded asteroid impact while focusing on the real danger of asteroids that could collide with Earth.
원문출처 : https://www.cnn.com/2018/06/29/world/international-asteroid-day-space-missions/index.html
원문출처 : https://www.cnn.com/2018/06/29/world/international-asteroid-day-space-missions/index.html