小惑星はDART宇宙船と衝突した後、100万キログラムを失いました
Images from the first month after DART’s asteroid collision. Each frame is the average over an entire night’s observing. The Didymos asteroid system is in the centre and the stars appear as streaks.Credit: University of Canterbury Ōtehīwai Mt John Observatory/UCNZ Last September, NASA’s Double Asteroid Redirection Test (DART) spacecraft smashed into an asteroid, deliberately altering…