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When NASA crashed a spacecraft into the asteroid moonlet Dimorphos in 2022, it altered both Dimorphos' orbit around its parent asteroid, Didymos, and the two objects' orbit around the sun, according to new research. NASA's Jet Propulsion Laboratory (JPL) said in a press release that this "marks the first time a human-made object has measurably altered the path of a celestial body around the Sun." It's a promising result as scientists work to find a feasible method of defending Earth from hazardous space objects.
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据彭博社报道，美国 3D 引擎技术公司 Unity Software 正在评估其中国业务的多种战略选项。
Back in those simpler days, I was what is called a midlist writer. That meant that I would sell enough copies to make a small profit for the publishing house. But I wasn’t expected to write bestsellers.