Indian astronomers identified Alaknanda, a spiral galaxy found with James Webb Space Telescope data. It is described as the second-farthest known spiral galaxy. Alaknanda was observed at a redshift of about z = 4.05, which places it roughly 1.5 billion years after the Big Bang. For examination purposes, the update is relevant to science and technology, astronomy, and static GK areas such as redshift, the role of space telescopes, galaxy formation, and the early universe.
The importance of the finding lies in the structure of spiral galaxies, which have organised disks and arms. Finding such a spiral structure in the early universe suggests that massive disks and spiral galaxies were already in place earlier than expected. The fact is therefore not just about naming a distant galaxy; it also helps students understand how observations refine the timeline of cosmic evolution.
The reported Astronomy & Astrophysics study is associated with Rashi Jain and Yogesh Wadadekar of the National Centre for Radio Astrophysics, Tata Institute of Fundamental Research. The study used filter measurements from the James Webb and Hubble Space Telescopes, including observations from the UNCOVER and Medium Band Mega Science surveys, and the morphology analysis reported two symmetric spiral arms. In prelims, Alaknanda, redshift, and the James Webb Space Telescope can be asked as direct facts. In mains, the same update can support a short science-based explanation of how improved observations change the understanding of the origin and evolution of the universe.