Enigmatic depressions on the surface have puzzled scientists since the 1970s NASA’s MESSENGER spacecraft discovered strange hollows on the surface of Mercury. Images taken from orbit revealed thousands of mysterious depressions, pitted and uneven, in areas all across the planet, up to a half-mile (800 meters) across and 120 feet (37 meters) deep. This mosaic […]
Category:
The Solar System
Posted on
October 17, 2023
Sign up for our newsletter:
Categories
1
3
1
106
2
14
1
1
7
51
615
10
11
4
13
6
1
23
24
287
140
2
18
1
2
3
2
31
1
3
1
254
52
1
10
1
1
6
13
340
15
117
1
4
10
2
1
11
1
29
1
27
15
4
215
12
188
1
166
1
1
4
2
1
9
6
93
2
8
3
50
15
1
3
2
14
3
1
1
1
6
18
29
17
1
2
41
205
1
10
131
3
377
3
1
4
149
1
2
10
25
31
1
64
37
18
1
18
81
1
25
20
15
29
41
10
2
1
351
4
43
6
1
42
1
2
14
104
153
6
1
1
17
100
1
3
38
4
101
1
57
1
10
2
3
3
190
134
1
1
1
10
9
3
1
11
36
22
2
11
5
6
10
1
5
40
5
9
2
330
2
4
2
1
1
25
1
1
336
12
20
Blog Posts
I Am Artemis: Anton Kiriwas
May 8, 2026