Like NGC 602, NGC 2264 is a cluster of young stars between one and five million years old. (For comparison, the sun is a middle-aged star about 5 billion years old—about 1,000 times older.) ...

The Grinchy Christmas tree cluster, named NGC 2264, is a cluster of young stars between one and five million years old. Chandra data (red, purple, blue, and white) has been combined with optical ...