New Delhi: Scientists at the Physical Research Laboratory (PRL) in India have successfully captured detailed imaging and spectroscopic data of the interstellar comet 3I/ATLAS, currently on its trajectory out of the inner Solar System after its closest pass to the Sun (perihelion). These observations were carried out between November 12 and 15, 2025, using PRL’s 1.2-meter telescope at Mount Abu, a prominent ground-based facility renowned for its astronomical research.

PRL’s Advanced Imaging Reveals Coma Structure

The team utilised wide-area imaging in the red filter, producing false colour images that clearly display the comet’s near-circular coma—the glowing atmosphere of gas and dust that surrounds the nucleus. The coma is formed as solar heat causes frozen ices on the nucleus to vapori

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