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地球的磁极正从加拿大快速地移动到西伯利亚，科学家们也很困惑。_我的网站

一 |     The teaser of Border 2 was released today at a grand event in Mumbai. Among the cast members present at the venue were Sunny Deol, Varun Dhawan and Ahan Shetty. For Ahan, the film not only marks his return to the theatres after a long gap, but he also has to carry forward his father Suniel Shetty's legacy, who was an important part of the film Border.     During the event, the actor spoke about the advice his father gave him regarding his role. Ahan said, "Just be honest with your role, be honest with the character, and just have fun. Go out there and enjoy yourself. Don't think too much about what people have to say, or don't compare it to Border 1. That was the most important."          He continued, "I'm grateful for this opportunity. First of all, working with Varun sir and Sunny sir, an absolute legend, who did Border with my father. So I'm also carrying that legacy forward. There is a certain type of pressure, but that pressure will always be there. But like they say, 'baap toh baap hota hai'. So if I can even be 10 per cent of what my father was in that film, I think I'll be able to do justice to the character."     Sunny Deol, Varun Dhawan, Diljit Dosanjh and Ahan Shetty play soldiers in Border 2 who are trying to navigate through the 1971 Indo-Pak war. Directed by Anurag Singh and backed by Bhushan Kumar, JP Dutta and Nidhi Dutta, Border 2 brings together a strong cast including Sunny Deol, Varun Dhawan, Diljit Dosanjh, Medha Rana, Mona Singh, Sonam Bajwa and Ahan Shetty.          Presented by Gulshan Kumar and T Series along with JP Dutta's production house, the film aims to honour the spirit of Indian soldiers and take audiences through a journey of patriotism, courage and sacrifice. With its release set for January 23 2026, just before the Republic Day weekend, the excitement around Border 2 continues to grow with every new reveal.          Also Read: Suniel Shetty Reveals Ahan Shetty Was Sidelined After Signing Border 2。科学家们不知道为什么地球磁场运动得很快。研究人员说，磁极正在从加拿大“滑翔”到西伯利亚。磁北极的运动是显而易见的，世界各地的研究人员都渴望更新世界地磁模型。世界地磁模型是所有现代导航系统的基础，包括海军导航系统和手机上的谷歌地图。最新的世界地磁模型，于2015年出版，相信到2020年可以使用。但研究人员说，磁场变化如此之快，他们必须提前修改世界地磁模型。世界地磁模型原定于1月15日更新，但由于美国政府的关闭，时间不得不推迟到1月30日。地磁场在不断变化。小科学普及：地磁极（来自维基百科）人类首先根据地球两极的方向来定义磁铁的南北极，而不是相反：磁铁的北极是指磁针自由旋转时转向地磁北极的末端。由于两块磁铁的南北极相互吸引，这就意味着地磁场的北极实际上是地磁场的南极（即地磁场线指向地球中心的地方）。南北磁极一般位于地极附近，但其位置随地质时间的变化而变化较大。

二 | 这种变化太慢，无法干扰罗盘的日常使用。

三 | 然而，平均每几十万年就会发生一次地磁反转，即南北极突然（与地质时间尺度相比）相互交换。

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