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美国航天局 NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.

重大科研成果发布 First published in 1869, Nature is the world’s leading multidisciplinary science journal. Nature publishes the finest peer-reviewed research that drives ground-breaking discovery, and is read by thought-leaders and decision-makers around the world.

SciSeek reports the most relevant and important science content and provides a mandatory daily dose of news and facts for the intellectually curious. Science Search Engine | SciSeek

Science News features daily news articles, feature stories, reviews and more in all disciplines of science, as well as Science News magazine archives back to 1924. Science News features news articles, videos and more about the latest scientific advances. Independent, accurate nonprofit news since 1921.

Get the latest space exploration, innovation and astronomy news. Space.com celebrates humanity's ongoing expansion across the final frontier. Get the latest space exploration, innovation and astronomy news. Space.com celebrates humanity's ongoing expansion across the final frontier.

Official website of the Smithsonian, the world's largest museum and research complex, with 19 museums, 9 research centers, and affiliates around the world. Smithsonian Institution

Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives. Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.

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Watch your favorite Discovery Channel shows and find bonus content on all things science, technology, nature, and more at Discovery.com. Access Denied