The night sky has always played a crucial role in navigation, from early ocean crossings to modern GPS. Besides stars, the United States Navy uses quasars as beacons. Quasars are distant galaxies with supermassive black holes, surrounded by brilliantly hot disks of swirling gas that can blast off jets of material. Following up on the groundbreaking 2020 discovery of […]
Category:
Active Galaxies, Astrophysics, Astrophysics Division, Goddard Space Flight Center, Hubble Space Telescope, Quasars
Posted on
January 13, 2025
Sign up for our newsletter:
Categories
299
210
1
136
8
1
1
233
10
46
101
1
3
54
14
3
10
1
2
1
1
17
46
18
2
45
1
141
1
3
6
95
4
3
2
21
6
1
4
2
1
35
3
20
3
1
1
7
69
1
281
386
5
1
1
10
7
362
133
21
48
10
10
34
2
407
11
7
18
4
6
3
27
22
2
17
18
3
1
29
4
1
38
41
55
1
1
14
1
6
15
202
19
9
1
1
11
62
1
18
33
26
12
3
1
6
3
17
6
1
222
10
46
13
2
19
1
5
11
170
6
2
112
11
10
1
2
1
17
13
1
30
113
3
1
11
54
4
46
13
114
67
36
107
3
1
41
14
13
30
105
37
6
661
2
4
14
1
1
187
8
1
1
2
1
1
3
159
1
1
13
10
1
2
2
388
371
3
3
2
2
5
152
29
14
1
58
3
1
1
Blog Posts
APOD: 2026 September 27 – Andromeda Before and After Photoshop
September 27, 2026
APOD: 2026 September 26 – Mirrored Meteor and Milky Way
September 26, 2026
NASA, Boeing to Provide Update on Starliner Development
September 26, 2026