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![NASA simulation of binary black hole system](/sites/default/files/styles/large_2340x1212/public/2023-06/black-hole-simulation-NASA.jpg?itok=syOr9-V4)
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NASA's Goddard Space Flight Center/Scott Noble; simulation data, d'Ascoli et al. 2018
The gravitational waves emitted by the merger of black holes, when lensed by massive objects as the waves travel toward Earth can be used to calculate the rate at which the universe is expanding
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![colorful image of the belly view of a small shrimp](/sites/default/files/styles/large_2340x1212/public/2023-06/Parhyale-hawaiensis-wikipedia-uc-santa-barbara2.jpg?itok=H-tKFF2h)
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Damian Kao Alvina G Lai Evangelia Stamataki Silvana Rosic Nikolaos Konstantinides Erin Jarvis Alessia Di Donfrancesco Natalia Pouchkina-Stancheva Marie Sémon Marco Grillo Heather Bruce Suyash Kumar Igor Siwanowicz Andy Le Andrew Lemire Michael B Eisen Cas
The genome of the crustacean Parhyale hawaiensis, a model for animal development, regeneration, immunity and lignocellulose digestion. VijayRaghavan K, ed. eLife. 2016;5:e20062. doi:10.7554/eLife.20062.
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![People discuss matters of water policy over an aquifer.](/sites/default/files/styles/large_2340x1212/public/2023-06/groundwater-stakeholders.jpg?itok=vpqhNd8k)
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iStock/ Matt Perko
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![The symmetrical pattern of a cable-stayed bridge from below.](/sites/default/files/styles/large_2340x1212/public/2023-06/Bridge-iStock.jpeg?itok=u7kgF0c4)
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Gwoeii via iStock
Comparing the complexity of scientific theories is challenging. Mathematical symmetry can provide an excellent guide.
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![oil and natural gas infrastructure in the Permian Basin](/sites/default/files/styles/large_2340x1212/public/2023-06/oil-gas-permian-basin-uc-santa-barbara.jpg?itok=o_oh51YE)
Oil and gas extraction infrastructure in the Permian Basin
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![The winners of the 2023 NVC with a big check](/sites/default/files/styles/large_2340x1212/public/2023-06/NVC-checks-uc-santa-barbara.jpg?itok=QtyVF4JW)
Leeta's Kira Wyckhoff (left), and Linus Kautzsch (right), with materials professor Ram Seshadri (center)
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![Rice terraces at sunset in Japan](/sites/default/files/styles/large_2340x1212/public/2023-06/iStock-Sean-Pavone.jpg?itok=tqS8neGN)
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iStock/Sean Pavone
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![concept of subatomic particles from two lattices creating an exotic material](/sites/default/files/styles/large_2340x1212/public/2023-06/bosonic-correlated-insulator_0.jpg?itok=g_krdw7Z)
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sci-fig (https://sci-fig.com)
The negative electrons from one lattice and the positive "holes" from another together create a neutral exciton crystal