NGC 2420 is a bright open cluster located in the constellation of Gemini. It is approximately 2,000 light-years away from Earth and contains around 100 stars, with an estimated age of about 1.5 billion years. The cluster is notable for its relatively high concentration of stars, making it an interesting target for amateur astronomers. The stars in NGC 2420 are primarily composed of hydrogen and helium, typical of many open clusters. This cluster is also known for its distinct blue and yellow stars, which indicate different stages of stellar evolution. Observing NGC 2420 can provide insights into the life cycles of stars in a shared environment.