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The discovery was made possible by the European Space Agency's Gaia spacecraft, which is mapping more than a billion stars throughout the Milky Way and beyond, tracking their motion, luminosity, temperature, and composition.

Esteban Cardenas said the dogs — Ares, Kratos, Zeus, Titan and Gaia — were part of the first class of canines used by the department’s rescue unit, which works with German shepherds and golden retrievers.

This black hole was spotted in data from the European Space Agency's Gaia mission because it imposes an odd 'wobbling' motion on the companion star orbiting it.

Panuzzo is an astronomer at the Observatoire de Paris, part of France's National Centre for Scientific Research, and a member of the collaboration of researchers working with data from the European Space Agency’s Gaia mission.

Europe’s Gaia space telescope recently released the rough chemical composition for some 60,000 asteroids.