Leo Minor, the smallest constellation in the Northern Hemisphere, may be small in size but it is still mighty in its own way. Leo Minor, which means "small lion" in Latin, was first recorded by the German astronomer Johannes Hevelius in the 17th century. The constellation is located between the constellations of Leo and Ursa Major and is relatively undistinguished compared to the larger and more well-known constellations. However, it is still visible on clear nights with the naked eye. In Greek mythology, the constellation represents the Nemean Lion which was killed by the hero Hercules as his first labor. Leo Minor has also been associated with the constellation Leo and is sometimes depicted as a lion cub following its mother. Despite its small size and relative obscurity, Leo Minor has contributed to several scientific discoveries. In 1924, the American astronomer Edwin Hubble used the Cepheid variable stars in Leo Minor to help prove that the universe was expanding. In 1960, Russian astronomer Fritz Zwicky discovered the first example of a dark matter halo surrounding a galaxy in Leo Minor. Today, Leo Minor is still studied by astronomers for its various properties and characteristics. Its stars are used as standard candles in astronomical observations and it is believed to contain several exoplanets. In addition, Leo Minor is frequently used as a calibration standard for telescopes and cameras due to its brightness and convenient location in the sky. Although Leo Minor may be small, it is still a significant piece of our universe and continues to fascinate astronomers and stargazers alike.