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AIzaSyCYaC8UkdPkQKLFUmpasLV5eC3M802CrcA
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2

jan 31, 1958 - Explorer I discovers the Van Allen Radiation Belt.

Added to timeline:

9 months ago
0
0
111
Astronomy Timelime

Date:

jan 31, 1958
Now
~ 60 years ago
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