An Eye-catching Star Cluster

Westerlund 1, the biggest and closest “super” star cluster to Earth, dazzles in this image released on July 23, 2025. This view combines x-ray data from NASA’s Chandra X-ray Observatory (in pink, blue, purple, and orange), infrared data from NASA’s James Webb Space Telescope (in yellow, gold, and blue), and optical data from NASA’s Hubble […]
Posted on September 16, 2025
Sign up for our newsletter:

Categories

1
1
6
1
3
2
3
11
2
1
1
18
5
5
28
4
2
36
1
586
9
319
3
4
1
42
6
1
1
6
2
287
1
222
1
132
183
3
1
2
4
8
1
29
22
10
6
1
4
128
1
4
Io
4
5
5
2
2
2
40
10
1
52
14
1
1
87
10
17
3
11
6
1
3
12
10
1
1
1
202
1

Blog Posts

Newsletter Archive