Hubble identifies unusual wrinkle in expansion rate of the universe

A collection of images from the NASA/ESA Hubble Space Telescope features galaxies that are all hosts to both Cepheid variables and supernovae. (Source: NASA / ESA  / Adam G. Riess (STScI, JHU) via CNN) A collection of images from the NASA/ESA Hubble Space Telescope features galaxies that are all hosts to both Cepheid variables and supernovae. (Source: NASA / ESA / Adam G. Riess (STScI, JHU) via CNN)

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G7 leaders confer with Zelenskyy, prep new aid for Ukraine

Leading economic powers conferred by video link with Ukrainian President Volodymyr Zelenskyy on Monday as they underscored their commitment to Ukraine for the long haul with plans to pursue a price cap on Russian oil, raise tariffs on Russian goods and impose other new sanctions.

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