Halley's Comet, one of the most famous comets in history, made its latest swing through the inner Solar System, reaching perihelion on February 9, 1986. The comet, known for its long orbital period of about 76 years, was last visible to the naked eye in 1910. As it approached Earth again, anticipation built among the global population, eagerly seeking to glimpse this celestial marvel. The comet’s visibility was enhanced significantly as it ventured closer to the Sun, which increased its brightness due to sublimation of its icy nucleus.With advancements in technology, this appearance allowed numerous scientific missions to gather crucial data. The European Space Agency launched the Giotto spacecraft specifically to study the comet's nucleus. Giotto successfully made a close flyby, coming within 600 kilometers of the comet's core. The spacecraft transmitted back remarkable images and data, unveiling the comet's complex surface features, and contributing greatly to our understanding of comets.Many amateur astronomers and space enthusiasts participated in observing Halley's Comet, providing a unique opportunity for public engagement in astronomy. Stargazers around the world utilized telescopes and binoculars, with some locations organizing events to enhance public viewings. The comet's appearance was not only a scientific milestone but also a cultural phenomenon, inspiring art, literature, and discussion about the wonders of space and our place in the universe.