First observation of an extrasolar planet

The first observation of an extrasolar planet, known as an exoplanet, occurred around the star Van Maanen 2. This event marked a pivotal moment in the field of astronomy, as it expanded the understanding of planetary systems beyond our own solar system. Although the observation was made, it did not receive immediate recognition as an exoplanet at the time. The star Van Maanen 2 is a white dwarf located approximately 14 light-years away from Earth, and its faintness made the detection of any orbiting bodies challenging. The significance of this observation lies in its contribution to the eventual realization that other stars could host planets, a concept that would later be confirmed through more advanced observational techniques and technology. The impact of this early observation set the stage for future research in exoplanet discovery. It highlighted the need for improved methods of detection and analysis, which would evolve significantly over the following decades. The development of more sophisticated telescopes and detection methods, such as the transit method and radial velocity technique, has since led to the discovery of thousands of exoplanets. This has transformed the field of astronomy, prompting questions about the potential for life beyond Earth and the formation of planetary systems. The initial observation of Van Maanen 2's exoplanet, though not recognized at the time, is now seen as a foundational moment in the ongoing exploration of the universe.