James Webb 望远镜在爆炸的恒星Cassiopeia A周围 发现了类似于洋葱的灰尘层。 James Webb Telescope uncovers onion-like layers in dust around exploded star Cassiopeia A.

James Webb空间望远镜(JWST)披露了1670年代爆炸的一颗恒星Cassiopeia A附近星际尘埃的详细图像。 The James Webb Space Telescope (JWST) has revealed detailed images of interstellar dust near Cassiopeia A, a star that exploded in the 1670s. 望远镜捕捉到的光回声显示一层层的灰尘结构与洋葱相似,有厚厚的平面、结节和螺旋。 The telescope captured light echoes showing layered dust structures resembling onions, with dense sheets, knots, and swirls. 这些发现对星际介质的磁场线和动荡提供了新的洞察力,增进了我们对星际间空间的了解。 These findings offer new insights into the magnetic field lines and turbulence of the interstellar medium, enhancing our understanding of space between stars.