Is it humankind's greatest achievement 12 billion miles away a tiny spaceship is leaving our Solar System and entering the void of deep space. It is the first human-made object ever to do so. Slowly d...

1977年秋天，相隔16天发射的旅行者2号太空探测器克服了一切困难，在无数次未击中中幸存下来，近40年后，它继续向难以想象的距离传递革命性信息。...