- How to find and observe the Double Cluster (TOTS#5) (eyesonthesky.com)
NGC 869 and NGC 884 are two open cluster within our own Milky Way galaxy that are very close to each other, creating a “dual” cluster for telescope observers. The two clusters are each about 7,500 light years from Earth, so the photons from it reaching your eye in a telescope left that cluster about the time copper was being used in the Middle East. The estimated age is about 12.8 million years, making it one of the younger star clusters in our galaxy. Here is a detailed guide on how to locate the Double Cluster.
- Deming Glacier (Washington) (Wikipedia)
Deming Glacier is located on Mount Baker in the North Cascades of the U.S. state of Washington. Between 1850 and 1950, Deming Glacier retreated 7,217 ft (2,200 m). During a cooler and wetter period from 1950 to 1979, the glacier advanced 2,060 ft (630 m) but between 1980 and 2006 retreated back 1,140 ft (350 m). Situated on the southwest slopes of Mount Baker, Deming Glacier is bordered by the Easton Glacier to the east and the Black Buttes ridge to the west.