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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Celebrations, protests take place on Canada Day in Ottawa

Thousands of people wearing red and white and waiving Canadian flags packed downtown Ottawa to celebrate Canada's 155th birthday on Friday, while groups of protesters popped up around Parliament Hill to protest COVID-19 vaccines and federal restrictions.

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