Recently, a viral rumor claiming that ‘Earth will lose gravity for 7 seconds, causing tens of millions of deaths’ has spread widely on social media, sparking public panic. In response, NASA has clearly debunked the claim, stating it is entirely fictional and lacks any scientific basis.The so-called ‘7-second gravity loss’ theory alleges that due to some astronomical event or anomaly in Earth’s rotation, gravity will suddenly vanish worldwide for seven seconds, hurling people, buildings, and vehicles into the air and triggering mass casualties. However, NASA explains that Earth’s gravity is determined by its mass, and unless the planet’s mass were to change dramatically—an impossibility in reality—gravity cannot just disappear. Even if gravity were temporarily reduced, objects wouldn’t be flung into the sky due to inertia and other physical constraints.Scientists emphasize that such rumors often exploit public fear of the unknown and misunderstandings of scientific concepts. Genuine astronomical events—like solar eclipses, meteor showers, or near-Earth asteroids—are closely monitored and publicly announced well in advance by agencies like NASA, and never occur without warning or cause global catastrophe.Experts urge the public to rely on credible sources for scientific information and avoid sharing unverified claims. Staying rational and verifying information sources are key to preventing unnecessary panic.
近日，一则‘地球将失重7秒，导致千万人死亡’的谣言在社交媒体上广泛传播，引发公众恐慌。对此，美国国家航空航天局（NASA）明确辟谣，称该说法纯属虚构，毫无科学依据。所谓‘地球失重7秒’的说法声称，由于某种天文现象或地球自转异常，全球重力将在某一时刻突然消失7秒钟，导致人类、建筑、车辆等被抛向空中，造成大规模灾难。然而，NASA指出，地球的引力由其质量决定，除非地球质量发生剧变——这在现实中不可能瞬间发生——否则重力不会突然消失。此外，即使重力短暂减弱，也不会导致物体被‘抛飞’，因为惯性等因素会限制剧烈运动。科学家强调，类似谣言往往利用人们对未知的恐惧和对科学概念的误解进行传播。真正的天文学事件，如日食、流星雨或小行星接近地球，都会被NASA等机构提前监测并公开通报，绝不会突然发生且造成全球性灾难。专家建议公众从权威渠道获取科学信息，切勿轻信和转发未经证实的消息。面对网络谣言，保持理性、查证来源是避免恐慌的关键。
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