science π Largest known galaxy is a massive 1.7 million light-years
Astronomers determined that IC 1101 is the largest galaxy known, measuring about 1.7 million light-years across. This massive galaxy resides within the Abell 2029 galaxy cluster, according to research led by Carlos Marrero de la Rosa. The measurement was established using deep images from the Isaac Newton Telescope on 2023. The study suggests that IC 1101 is still actively growing through accretion events in its outskirts. This finding provides key insights into how super-sized galaxies evolve in the cosmos. π