On Jan. 16, 2020, the Mars Reconnaissance Orbiter (MRO) captured this image of two types of sand dunes on Mars: barchan and linear dunes. The small dots are called barchan dunes, and from their shape we can tell that they are upwind. The downwind dunes are long and linear. These two types of dune each […]
Posted on
March 8, 2024
Sign up for our newsletter:
Categories
7
8
595
141
1
1
1
6
10
1
3
5
2
3
31
1
2
37
1
9
233
10
1
90
2
103
146
1
2
132
42
14
1
322
2
29
24
1
28
1
4
3
102
10
184
360
1
3
1
1
50
1
128
51
18
12
2
4
1
1
13
2
1
10
19
1
16
1
23
25
13
135
198
209
37
1
1
1
332
2
2
24
1
4
18
1
18
79
6
15
10
9
3
13
1
40
2
3
15
2
2
1
1
1
4
9
1
12
6
1
157
8
1
3
29
12
323
12
1
2
14
3
10
13
1
11
1
18
48
1
41
1
4
6
6
6
1
3
1
23
100
2
29
1
1
297
1
10
5
8
62
1
5
42
7
16
3
2
2
148
1
15
2
96
4
1
3
34
29
281
10
2
6
1
55
4
Blog Posts
Tropical Cyclone Narelle Crosses Australia
March 24, 2026
NASA Data Hackathon Inspires Community Action
March 23, 2026