NGC 1900 is an open star cluster located in the constellation Columba. It was discovered by the astronomer John Herschel in 1834 and is situated approximately 4,000 light-years away from Earth. The cluster contains several bright stars and is estimated to be around 100 million years old. The stars in NGC 1900 are loosely bound by gravity, allowing them to spread out over time. This cluster is notable for its relatively young age compared to other star clusters, making it an interesting subject for studying stellar evolution and the formation of stars in our galaxy, the Milky Way.