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Aegilops tauschii is a widely distributed goatgrass and a progenitor of modern bread wheat.
Graphic shows the masses for black holes detected through gravitational-wave observations (blue).
The Aurora Australis, or Southern Lights, over the South Pole Telescope.
The Robert C. Byrd Green Bank Telescope in Green Bank, West Virginia.
Utah's Rainbow Bridge, part of the study, is one of the world's largest natural arches.