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More than 1,600 migrants arrive on Spanish Canary Islands_我的网站

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A | 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。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。 MADRID -- Some 314 migrants arrived in Spain's Canary Islands in two boats early Monday, bringing to more than 1,600 the number of migrants to reach the islands since Friday, emergency services said.The service said one boat carrying 229 migrants was escorted to El Hierro island while another with 85 was taken to Tenerife . Of the boats that arrived over the weekend, one on Saturday was carrying 320 migrants. The state news agency EFE said it was the largest number in a single boat since human traffickers began to regularly use the Canary Island route in 1994. The previous record of 280 was recorded earlier this month.Most of the boats arrived at El Hierro, which has received several thousand migrants in recent weeks. The Canary Islands are located off the northwest coast of Africa.Most of the migrants come from sub-Saharan African countries and most of the boats depart from Senegal.Migrants arriving by boat in Spain spend up to 72 hours in police custody, for identification, then are moved into various reception or detention centers depending on their cases. Although some are deported, most apply for asylum and are taken to mainland Spain for their petitions to be studied.In the end, many are freed and ordered to leave Spain if they don’t get asylum.Spain’s Interior Ministry says nearly 23,500 migrants reached the Canary Islands by boat between Jan. 1 and Oct. 15. That’s a 90% increase from the same period last year.___Follow AP’s global migration coverage at https://apnews.com/hub/migration。

B | 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。

C | ”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。

D | 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。

E | 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。未来对这个“棉花糖”世界的观察（也许用詹姆斯-韦伯太空望远镜）可以告诉我们更多关于它的大气和密度的信息。