The Sky at Night
Season 21 Episode 5 - The Solar Cycle
8.3 ?
1957
Documentary, News
Sunspots are known to increase and decrease over an 11-year cycle. We have just passed through a period of minimum solar activity and the sun-spots should now be increasing, but are slow to do so. Patrick Moore and Dr Ron Maddi son discuss the possible causes of this apparent irregularity. in the solar cycle, and talk about some of the other interesting features of the sun's surface.
Episodes in Season 21
1
Sirius, the Dog-Star
2
Travel in Space and Time
3
The Mapping of Mercury
4
Celebrates its 20th anniversary
5
The Solar Cycle
NOW PLAYING
6
Uranus - the Second Ringed Planet?
7
The New Infra-red Telescope
8
The Swan in the Sky
9
The Voyager Missions
10
Stars of the Far South
11
The Amateur Astronomer
12
Why Do the Planets Shine?
13
