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Deep Space

The Hubble constant has changed, once again

This new measurement is based upon measuring the distance to red giant stars in different galaxies

Astronomy

Heroes of Space: Henrietta Swan Leavitt

On this day in 1868 an unsung astronomer, who helped to discover our place in the universe, was born

Deep Space

Hubble and Gaia unite to understand cosmic expansion

Using the power and synergy of two space telescopes, astronomers have made the most precise measurement to date of the universe’s expansion rate.

News

New component of Milky Way discovered

Astronomers using the VISTA telescope at ESO’s Paranal Observatory have discovered a previously unknown component of our galaxy

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