The Andromeda galaxy, also known as Messier 31 (M31), is the closest spiral galaxy to the Milky Way at a distance of about 2.5 million light-years. Astronomers use Andromeda to understand the structure and evolution of our own spiral, which is much harder to do since Earth is embedded inside the Milky Way. The galaxy […]
Category:
Andromeda Galaxy, Chandra X-Ray Observatory, Galaxies, Marshall Astrophysics, Marshall Space Flight Center, The Universe
Posted on
June 26, 2025
Sign up for our newsletter:
Categories
4
641
215
45
2
17
1
1
2
1
1
10
1
378
38
14
26
1
47
2
18
1
7
2
297
42
44
1
29
10
17
5
7
6
3
1
1
16
39
134
1
17
33
6
1
3
1
203
198
1
105
10
1
68
2
51
10
104
354
1
10
1
1
3
6
1
3
44
1
2
1
93
2
4
1
137
21
11
10
2
1
4
2
111
13
2
18
163
2
1
30
1
5
3
57
1
13
108
16
21
395
6
1
33
7
14
62
33
3
1
180
4
26
14
38
2
18
17
2
3
25
3
13
4
3
110
6
1
374
48
4
1
1
13
1
15
35
6
1
362
2
12
1
271
12
57
34
1
5
1
8
18
5
125
1
6
5
2
1
12
1
155
10
227
10
2
10
1
2
10
10
1
3
41
1
149
10
20
2
1
8
14
1
14
3
2
30
Blog Posts
Pursuing a Dream of Working for NASA
August 12, 2026
APOD: 2026 August 12 – Perseids over a Little Planet
August 12, 2026