The light from the Christmas Tree Galaxy Cluster began its journey across the cosmos when the solar system, now 4.6 billion years old, was newly formed and just around 300 million years old.

While the Christmas tree is a relatively new tradition in the U.K., the concept of decorating homes with greenery like holly and ivy had been taking place since pre-Christian times.

NASA’s telescopes have delivered a just-in-time holiday gift from the other side of the galaxy—a new composite image of a particularly festive grouping of stars known as the Christmas Tree ...

NGC 2264 — also known as the “Christmas Tree Cluster” since it looks like a cosmic tree with strings of glowing lights — can be found in the Milk Way, about 2,500 light-years from Earth.

Minimalism is on the naughty list this Christmas as people decorate their trees with bows, garland, tinsel, ornaments and, well, anything else that will fit on a branch. By Madison Malone Kircher ...