On Jan. 7, 1610, Italian astronomer Galileo Galilei peered through his newly improved 20-power homemade telescope at the planet Jupiter. He noticed three other points of light near the planet, at first believing them to be distant stars. Observing them over several nights, he noted that they appeared to move in the wrong direction with […]
Posted on
January 8, 2025
Sign up for our newsletter:
Categories
1
1
29
10
198
105
7
3
10
6
1
16
134
1
104
33
1
203
3
1
3
6
45
1
10
1
1
68
2
51
10
354
2
11
2
1
3
2
1
2
1
30
5
1
1
137
17
21
1
93
13
109
2
4
111
13
10
1
4
14
18
163
2
1
14
21
3
3
57
1
180
2
396
6
1
33
7
3
63
33
13
1
38
6
1
374
4
26
18
17
2
25
57
34
3
110
3
1
4
1
13
1
48
4
5
1
15
227
1
5
35
6
1
362
2
12
271
12
1
1
6
10
1
8
18
5
126
155
2
1
12
1
10
2
20
10
10
3
1
2
10
149
10
3
41
1
2
17
1
8
14
14
1
1
2
379
26
30
18
1
4
642
47
215
45
2
2
7
1
1
10
1
17
38
14
5
6
2
1
39
17
1
1
2
297
43
45
Blog Posts
APOD: 2026 August 13 – Total Solar Eclipse Over Spain
August 13, 2026
NASA Data Helps Commercial Space Plan Living Off Our Moon
August 12, 2026
2026 Total Solar Eclipse in Spain
August 12, 2026
Newsletter Archive
- ‹ previous
- 3 of 3