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Olympic champion Ma Long invites Taiwan youth to visit Chinese mainland_我的网站

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一 | 在他们的观测中，天文学家注意到，这个“棉花糖”世界，正如许多人所认为的那样，似乎比我们之前探测到的任何其他气态巨行星的密度都要低得多。此外，它与它所环绕的红矮星的距离很近，这引起了关于该行星形成的更多问题。 (ECNS) -- Olympic table tennis champion Ma Long on Tuesday invited young people from Taiwan to visit the Chinese mainland for sports training, competitions and study activities, as he addressed a cross-Strait youth exchange event held in Shanghai. Ma said the Chinese mainland offers a well-developed training system, professional coaching and a strong sporting environment for both professional athletes and young people who enjoy sports. Ma also recalled his first visit to Taiwan in late 2024 as part of a mainland university delegation. The group visited six universities, where he was pleased to find table tennis clubs and students who were enthusiastic about the sport. At the forum, Ma presented table tennis paddles to young players who took part in a cross-Strait youth table tennis exchange tournament, expressing hope that they would make more friends through the sport. (By Intern Yang Hongran, Zhang Dongfang) 。卡内基科学研究所地球和行星实验室的研究员Shubham Kanodia在NOIRLab共享的新闻稿中说：“传统上认为红矮星周围的巨行星很难形成。天文学家已经开始称这是一个‘棉花糖’世界，原因是这个气态巨行星具有与棉花糖相似的密度。”但是，这个气气态巨行星究竟是如何变成如此低的密度的，这让科学家们感到困惑。然而，他们已经为这个“棉花糖”世界的密度提出了至少一个可能的原因。而这个理由可能与该行星的岩石核心有关。据信，气态巨行星开始时是巨大的岩石核心，质量是地球的10倍。从那里，它们迅速拉入大量邻近的气体，形成我们今天所知道的“巨无霸”。其他的气态巨行星，如木星，甚至可能因吞噬其他行星而长到如此大。这颗被称为TOI-3757 b的行星有可能在其核心内有较低的重元素丰度，因此岩质核心形成得更慢，推迟了气体吸积的开始。