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
291
149
1
3
3
2
2
1
32
4
1
1
212
2
17
29
29
1
14
1
25
43
1
1
1
42
10
1
1
18
6
41
10
196
33
5
1
6
6
1
2
11
370
51
2
44
1
15
1
3
2
3
10
1
103
1
65
2
1
134
17
89
39
102
134
10
18
1
10
4
6
1
384
6
346
1
1
18
2
198
1
25
107
11
37
1
2
6
1
6
157
3
11
17
4
5
20
3
1
1
43
1
2
59
26
2
28
11
1
52
3
3
108
4
1
2
3
23
14
4
12
1
5
1
3
1
24
13
10
18
14
1
6
10
11
3
1
346
1
2
40
1
4
263
10
12
54
1
32
37
15
171
356
149
121
1
1
2
4
10
1
6
221
1
8
8
17
1
10
2
1
1
10
32
10
1
103
4
20
10
14
13
1
2
625