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
4
2
5
14
5
1
40
2
1
10
3
87
17
52
12
1
10
10
202
1
11
6
1
3
1
1
3
1
3
1
6
11
1
2
1
1
5
2
18
1
5
586
28
9
4
36
3
4
1
319
2
6
287
6
1
1
1
42
2
1
221
3
183
10
2
132
6
1
29
128
8
1
4
22
4
2
1
1
Io
4

Blog Posts

Chilled New York City
February 4, 2026
Full Moon over Artemis II
February 3, 2026
NASA Space to Soil Challenge
February 3, 2026

Newsletter Archive