天文台(图文无关)中微子是宇宙空间中一种奇特的基本粒子。它是一种质量比电子还要小得多的不带电的中性粒子,但是它却具有极大的穿透力,可以穿透任何物质,甚至从地球的这一头穿到另一头。天文学家非常看重它,因为中微子携带着来自宇宙天体的信息,可是,如果我们想在太空中或是地球表面的大气层中捕获它真是太难了。于是,科学家根据中微子的特点,希望能够利用地表的岩石和海水来阻隔来自宇宙的其他粒子,将搜寻、观测中微子的装置移到了地底下和海底,从而密切注视中微子,并设法捕获它。美国在夏威夷的“特玛姆特”海底天文台,就位于海平面以下4800米深处。清澈的海水被作为汇集光源的装置,同时为了避免水波和发光鱼类的干扰,科学家也动了不少脑筋,对装置作了技术处理,以保证观测效果。科学家宣称,用海底天文台来观测和接收天体某种信息的效果,是地面天文台所望尘莫及的。比如同样是观测太阳,海底天文台就能观测到太阳核心部分瞬间发生变化的情况,这是任何一架地面望远镜都无法办到的。
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