NGC 2135 is a bright open star cluster located in the constellation of Carina. It was discovered by the astronomer John Herschel in 1834 and is approximately 2,500 light-years away from Earth. The cluster contains several young, hot stars that are primarily blue in color, indicating their high temperatures. The cluster is part of a larger region of star formation and is often studied to understand stellar evolution. NGC 2135 is relatively easy to observe with small telescopes, making it a popular target for amateur astronomers interested in exploring the night sky.