A galaxy supercluster is the largest known structure in the Universe, made of dozens of galaxy clusters, themselves containing thousands of galaxies. The Saraswati Supercluster, discovered this year by a team of Indian scientists, is the largest known galaxy cluster today. It extends over 650 million light years across and weighs more than 20 billion suns would. We caught up with Prof. Joydeep Bagchi, who led the team that discovered Saraswati Supercluster, for a chat about the importance and implications of the discovery.
The Indian Space Research Organisation (ISRO) has achieved another leap in its quest for self-reliance in space, successfully launching the heaviest communication satellite ever lifted from Indian soil using its formidable heavy-lift rocket, the Launch Vehicle Mark-3 (LVM3). Affectionately nicknamed ‘Bahubali’ for its sheer power, the LVM3-M5 mission placed the critical 4,410 kg CMS-03 spacecraft into a precise Geosynchronous Transfer Orbit (GTO) on Sunday, November 2, 2025, from the Satish Dhawan Space Centre.