NASA’s Neil Gehrels Swift Observatory has ended its science mission now that the spacecraft is orbiting less than 171 miles (275 kilometers) above Earth’s surface. The greater atmospheric drag at this height prevents the satellite’s telescopes from steadily gazing at their astronomical targets. Swift conducted its final observation on Oct. 20. It is expected to […]
Category:
Galaxies, Stars, & Black Holes, Gamma-Ray Bursts, Goddard Space Flight Center, Neil Gehrels Swift Observatory, Stars, The Universe, Ultraviolet Light, X-ray Astronomy, X-ray Binaries
Posted on
October 24, 2026
Sign up for our newsletter:
Categories
33
3
3
14
1
2
1
17
10
1
679
1
6
11
400
17
1
1
29
1
1
42
1
16
14
1
1
1
60
118
35
4
2
4
1
21
2
1
11
1
46
18
2
283
240
41
6
3
5
5
10
1
215
2
136
6
1
1
8
1
26
96
58
3
5
308
11
71
1
3
3
1
153
20
18
7
10
19
23
4
1
66
14
2
1
395
3
26
29
3
53
1
48
35
141
223
1
19
7
10
7
1
1
6
1
1
17
2
7
16
6
3
41
17
19
1
46
3
1
207
108
1
1
14
3
2
1
1
47
111
21
12
173
1
6
114
416
11
1
3
1
48
30
15
3
30
10
371
1
38
67
40
12
2
1
2
6
1
2
11
1
2
31
12
5
13
4
117
4
11
1
92
1
14
2
9
11
17
1
1
3
164
3
137
5
198
13
107
2
2
14
64
381
3
Blog Posts
APOD: 2026 November 4 – The Not-So-Hidden Galaxy, IC 342
November 4, 2026
Before the Dawn in America’s Heartland
November 4, 2026
Astronaut and Earth
November 3, 2026