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
10
11
4
1
7
51
613
24
287
140
13
6
1
23
3
2
2
18
1
2
1
253
52
31
1
3
13
340
15
117
1
10
1
1
6
1
4
10
4
215
12
2
1
11
1
29
1
26
15
166
1
188
1
1
9
1
4
2
15
1
6
93
2
8
3
50
3
3
2
14
1
1
1
41
205
1
10
131
6
18
29
17
1
2
4
149
3
377
3
1
25
31
1
1
2
25
64
37
18
1
18
81
1
29
41
10
20
15
4
43
6
2
1
349
2
14
102
1
42
1
6
153
100
1
1
16
4
101
1
1
3
38
10
2
57
1
3
3
189
133
1
10
9
1
1
11
5
6
10
3
1
11
35
22
2
5
9
1
5
40
2
2
1
330
2
4
336
12
20
1
25
1
1
106
1
3
1
2
14
1