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The Sky at Night

S9E6 · How Long is a Day?

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Episodes

E1
E1

Unwelcome Atmosphere

1965-01-15

E2
E2

Up in a Balloon

1965-02-12

E3
E3

Lava or Dust?

1965-03-12

E4
E4

Ancient Lore

1965-04-02

E5
E5

Naked Eye Astronomy

1965-04-30

E6
E6
NOW

How Long is a Day?

1965-06-04

E7
E7

Space Weather

1965-06-25

E8
E8

Communicating with Other Worlds

1965-07-23

E9
E9

Mars in Shot

1965-08-20

E10
E10

Re-thinking the Universe

1965-09-17

E11
E11

Ninety-Eight Inches

1965-10-08

E12
E12

The Unsteady Universe

1965-11-05

E13
E13

The Extra Planet

1965-12-03