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Hubble Spots Spirals Within a Spiral

A galaxy having so many distinct rings is rare, making NGC 2273 unusual. Galaxy NGC 2273 hosts an inner ring and two outer “pseudorings." Rings are created when a galaxy's spiral arms appear to loop around and nearly close upon one another.

nasa.gov/image-feature/goddard

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小森林

每个人都有属于自己的一片森林,也许我们从来不曾走过,但它一直在那里,总会在那里。迷失的人迷失了,相逢的人会再相逢。愿这里,成为属于你的小森林。