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This crossing, however, presents some problems
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American Moon

This crossing, however,presents some problems, which apparently have not been resolvedto...

This crossing, however,
presents some problems, which apparently have not been resolved
to this day

Full Transcript

00:00:01.000 --> 00:00:03.089
This crossing, however, presents some problems,
00:00:03.092 --> 00:00:07.013
which apparently have not been resolved to this day.
Duration
7 seconds
Views
15
Timestamp in Movie
01:00:46
Uploaded
Jun 29, 2025
Genres
documentary, history
Production
N/A

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Movie Summary

This documentary examines the authenticity of the photographic record of NASA's Apollo missions.
Let's take a closer look the history of Van Allen belts. - American Moon 00:04
Let's take a closer look the history of Van Allen belts...
In January 1958 the United States launched its first satellite, Explorer 1. - American Moon 00:07
In January 1958 the United States launched its first satelli...
This satellite had on board some special instruments, - American Moon 00:10
This satellite had on board some special instruments,
The satellite was launched into an eccentric orbit, - American Moon 00:10
The satellite was launched into an eccentric orbit,
Thanks to this eccentricity, - American Moon 00:06
Thanks to this eccentricity,
Not only was radioactivity increasing as we got farther from the Earth, - American Moon 00:12
Not only was radioactivity increasing as we got farther from...
Here is how James Van Allen describes it that experience. - American Moon 00:04
Here is how James Van Allen describes it that experience.
I began to understand what was going on, - American Moon 00:10
I began to understand what was going on,
Then there was a very rapid change, - American Moon 00:09
Then there was a very rapid change,
Then after a few minutes it goes up from zero to very high, - American Moon 00:12
Then after a few minutes it goes up from zero to very high,
The reason for the sudden drop to zero - American Moon 00:12
The reason for the sudden drop to zero
We will now pass 1,000 kilometers - American Moon 00:08
We will now pass 1,000 kilometers
- Oh, go back to zero. - Yeah... - American Moon 00:04
- Oh, go back to zero. - Yeah...
Along the way, the meter measured at one point a strong radiation, - American Moon 00:07
Along the way, the meter measured at one point a strong radi...
Which showed that, obviously, he was encountering an area of intense radiation. - American Moon 00:05
Which showed that, obviously, he was encountering an area of...
Scientists were discovering so-called Van Allen belts. - American Moon 00:05
Scientists were discovering so-called Van Allen belts.
Two toroidal-shaped belts, localized in the magnetosphere, - American Moon 00:10
Two toroidal-shaped belts, localized in the magnetosphere,
Van Allen wrote in 1959: - American Moon 00:13
Van Allen wrote in 1959:
The discovery is, of course, worrisome for astronauts. - American Moon 00:04
The discovery is, of course, worrisome for astronauts.
The human body will have to be somehow shielded from this radiation, - American Moon 00:08
The human body will have to be somehow shielded from this ra...