NASA astronaut Don Pettit demonstrates electrostatic forces using charged water droplets and a knitting needle made of Teflon. This series of overlapping frames from Feb. 19, 2025, displays the unique attraction-repulsion properties of Teflon and charged droplets, similar to how charged particles from the Sun behave when they come in contact with Earth’s magnetic field. […]
Posted on
December 19, 2025
Sign up for our newsletter:
Categories
11
1
1
1
1
13
1
2
5
3
18
5
2
3
17
9
150
1
9
4
36
5
586
1
28
1
4
3
319
2
1
348
1
6
1
287
39
1
1
6
4
1
2
42
1
25
1
222
125
30
23
1
14
2
3
32
1
99
183
6
1
10
10
2
132
8
2
29
1
49
129
10
4
2
1
1
4
2
1
131
3
22
4
1
1
28
34
1
19
1
1
4
6
1
15
5
14
6
8
2
27
2
15
1
193
145
1
15
22
97
2
2
15
1
94
79
40
24
10
3
87
2
1
1
6
10
1
52
143
51
14
17
17
1
40
12
41
2
28
10
2
10
1
203
5
10
324
11
6
1
1
1
1
3
1
274
2
316
3
6
61
1
3
1
6
2
4
3
1
Blog Posts
A Winter Blanket Covers North Carolina
February 6, 2026
NASA Selects Two Earth System Explorers Missions
February 5, 2026
Career Spotlight: Welder (Ages 14-18)
February 5, 2026