Publicado el segundo catálogo del observatorio espacial Gaia, con datos de 1.700 millones de estrellas
The European Space Agency’s Gaia mission has released a second catalogue containing precise astrometric data for nearly 1.7 billion stars, establishing the most accurate map of the Milky Way to date. This release provides critical measurements of positions, distances, and movements, alongside detailed photometric information such as brightness and color variations for millions of objects, including variable stars and asteroids. Significantly, this dataset includes visible-light observations for hundreds of thousands of quasars, traditionally tracked via radio waves, thereby establishing a robust reference frame for celestial coordinates. By combining these optical measurements with other parameters like radial velocities and temperatures, the catalogue offers a multidimensional view of our galaxy that supports diverse astronomical research areas. This release is highly relevant to open_data because it demonstrates the value of making massive, complex scientific datasets freely available to the global community. By adhering to open science principles, ESA enables researchers worldwide to derive new insights and verify results independently. This transparency accelerates discovery, proving that accessible data infrastructure is essential for maximizing the societal and scientific return on major space investments.
Source: microsiervos.comPublished on 2025-03-28
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