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
150
2
1
4
1
36
1
586
1
28
9
1
3
1
28
1
348
1
319
1
1
6
1
287
15
1
6
39
6
4
1
145
42
1
2
125
30
23
14
94
2
222
25
99
183
32
3
6
1
52
10
2
10
1
29
129
41
49
10
8
2
10
4
4
2
1
131
3
22
4
1
34
1
1
19
4
1
5
14
2
316
6
8
2
2
27
15
193
1
1
15
22
2
4
15
1
79
40
97
10
3
1
87
2
1
1
24
1
143
51
1
14
17
17
6
10
40
12
2
3
28
2
10
2
203
1
5
10
11
6
1
1
5
324
1
4
1
3
274
2
3
1
6
61
3
1
1
6
2
3
1
11
1
2
1
1
1
2
1
13
1
3
5
18
5
17
1
9
132
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