Astronomers using NASA's Hubble Space Telescope have imaged the largest protoplanetary disk ever observed circling a young ...
A sideways spiral galaxy shines in this NASA/ESA Hubble Space Telescope image. Located about 60 million light-years away in ...
Abstract: Penguin colony detection is an important part in Antarctic research and is significant for global ecological conservation. Meanwhile, the emperor penguin (Aptenodytes forsteri) urgently ...
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