Messier 25 is an open star cluster located in the constellation Sagittarius. It was discovered by the astronomer Charles Messier in 1764 and is approximately 2,000 light-years away from Earth. The cluster contains around 100 stars, with many being young and bright, making it a fascinating object for amateur astronomers. The stars in Messier 25 are relatively close together, which allows them to interact gravitationally. This cluster is about 100 million years old and spans roughly 20 light-years in diameter. Observing Messier 25 can provide insights into the formation and evolution of star clusters in our galaxy, the Milky Way.