The Hubble Space Telescope (HST), launched by NASA on April 24, 1990, revolutionized observational astronomy. Named after astronomer Edwin Hubble, the space telescope is one of NASA's Great Observatories, and is capable of observing ultraviolet, visible, and near-infrared light. Over more than three decades of operation, Hubble has provided groundbreaking insights into the universe—confirming the age of the cosmos, the presence of supermassive black holes at the centers of all major galaxies, and the accelerating rate of the universe's expansion are just some of its achievements. Hubble also pioneered the chemical analysis of exoplanet atmospheres and helped map the 3D distribution of dark matter. To this day, it remains one of humanity's most capable observatories.