Discovery of a super-Earth near to the habitable zone of a cool star

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  • Combined image of interstellar comet 3I/ATLAS formed by 239 exposures of 50 seconds taken with the Two-metre Twin Telescope (TTT3) at the Teide Observatory.
    Press release
    3I/ATLAS: The IAC is monitoring closely the third interstellar object detected in the Solar System
    The Instituto de Astrofísica de Canarias (IAC) is actively participating in the observation of object 3I/ATLAS (C/2025 N1 ATLAS), initially included as A11pl3Z in the confirmed list of Near-Earth Objects (NEOs) of the International Astronomical Union's Minor Planet Centre (IAU/MPC). The object, which has been shown to be the third interstellar object detected in our solar system, was discovered by one of the telescopes in the ATLAS network for the detection and early warning of asteroids on an Earth-impact trajectory. The IAC is part of this network with its new telescope structure, ATLAS
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  • Iniciativa internacional Equal Day
    Press release
    El IAC invita a los centros educativos a unirse al "Equal Day 2026" por la paz y la igualdad
    Por segundo año consecutivo, el Instituto de Astrofísica de Canarias (IAC), en colaboración con el equipo de Coordinadores Nacionales de Educación de la Astronomía (NAEC) en España de la Oficina de Astronomía para la Educación (Unión Astronómica Internacional), se suma a la iniciativa internacional Equal Day. Este evento global, que se celebrará entre el 18 y el 23 de marzo de 2026, utiliza la astronomía como una herramienta para promover la paz, la equidad, la sostenibilidad y la empatía en todo el planeta. Consolidando un éxito internacional Tras una inspiradora primera edición en 2025 que
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  • R1_mass
    Research news
    A physically motivated galaxy size definition across different state-of-the-art hydrodynamical simulations
    Measuring galaxy sizes is essential for understanding how they were formed and evolved across time. However, traditional methods based on l ight concentration or isophotal densities often lack a clear physical meaning. A recent study from Trujillo+20 explores a more physically motivated definition: the radius R 1, where the stellar surface density falls to 1 solar masses per parsec square —roughly the threshold for gas to form stars in galaxies like the Milky Way. In this work, Arjona-Gálvez+25 uses over 1,000 galaxies from several state-of-the-art cosmological simulations (AURIGA, HESTIA
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