A planet may have been destroyed by a white dwarf at the center of a planetary nebula — the first time this has been seen. As described in our latest press release, this would explain a mysterious X-ray signal that astronomers have detected from the Helix Nebula for over 40 years. The Helix is a […]
Category:
Chandra X-Ray Observatory, Helix Nebula, Hubble Space Telescope, Marshall Astrophysics, Marshall Space Flight Center, Nebulae, Planetary Nebulae, Stars, The Universe, White Dwarfs
Posted on
March 4, 2025
Sign up for our newsletter:
Categories
33
12
17
1
22
10
7
10
4
5
34
11
3
2
18
3
27
10
18
1
19
9
113
55
11
4
1
1
14
1
1
15
386
41
26
1
13
222
19
37
6
661
48
7
18
1
1
6
3
8
6
1
13
1
17
2
6
1
17
170
41
46
10
112
1
1
3
1
13
3
152
29
202
3
107
1
105
11
67
36
6
299
210
3
1
30
46
2
4
46
1
54
3
2
1
1
10
2
11
2
1
5
1
159
1
30
45
13
141
53
1
2
2
95
371
3
13
114
4
14
2
14
1
1
3
1
20
3
1
101
14
3
1
187
136
7
3
2
1
17
14
1
10
1
1
10
362
1
21
2
6
1
388
1
46
18
407
11
2
1
58
1
2
35
3
3
3
2
29
4
2
1
21
38
6
1
4
8
6
1
281
233
5
1
133
1
10
69
1
62
Blog Posts
APOD: 2026 September 26 – Mirrored Meteor and Milky Way
September 26, 2026
NASA, Boeing to Provide Update on Starliner Development
September 26, 2026
NASA Welcomes San Marino Signing the Artemis Accords
September 25, 2026