Source: TH Subject: Science and Technology Context: Indian astronomers have discovered Alaknanda, an implausibly old and well-formed spiral galaxy dating to just 1.5 billion years after the Big Bang, using JWST data. About Alaknanda Galaxy: What it is? Alaknanda is a distant, fully developed spiral galaxy with a rotating disk, two symmetric spiral arms, and …
Source: IT Context: Astronomers have discovered the longest tidal tail ever observed, spanning 1.27 million light-years from the galaxy NGC 3785 in the Leo constellation. About Tidal Tail: What it is: A tidal tail is a long, thin stream of stars and interstellar gas formed due to gravitational interactions between galaxies. How it forms: Gravitational …
Facts for Prelims (FFP) Source: TH Context: A study conducted by the Indian Institute of Astrophysics (IIA) aims to understand the connection between gravitational instabilities and galaxy evolution. What are Gravitational Instabilities? Gravitational instabilities refer to disruptions or fluctuations in the gravitational forces within a celestial object, such as a galaxy or a …
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