Euclid's 'twin' arrives at ESA mission control

ESA's Euclid observatory has begun to survey billions of galaxies on a quest to uncover the secrets of dark matter and dark energy from its vantage point 1.5 million km from Earth.

Image: Hubble captures globular cluster NGC 2298

This new NASA Hubble Space Telescope view shows the globular cluster NGC 2298, a sparkling collection of thousands of stars held together by their mutual gravitational attraction. Globular clusters are typically home to older ...

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