Tidal Tail:
Astronomers have discovered the longest tidal tail ever observed, spanning 1.27 million light-years from the galaxy NGC 3785 in the Leo constellation.A tidal tail is a long, thin stream of stars and interstellar gas formed due to gravitational interactions between galaxies.Gravitational forces during close encounters or mergers between galaxies strip material (stars, gas, and dust) from their outer regions, creating two tidal tails—one leading and one trailing.
