1991 aired between 21 Jan 1991 and 09 Dec 1991, 13 episodes.
Episodes
E01
Mars - the Red Planet
21 Jan 1991
E02
The Fastest Clocks in the Universe
28 Feb 1991
E03
Jupiter and Family
11 Mar 1991
E04
Bombardment from Space
31 Mar 1991
E05
Wanderers in Space
28 Apr 1991
E06
Guarding Their Secrets
26 May 1991
E07
Saturn the Ringed Planet
01 Jul 1991
E08
Soviet Space Astronomy
29 Jul 1991
E09
The Pole Star
25 Aug 1991
E10
Galaxy in Creation?
23 Sep 1991
E11
Hubble Space Telescope
20 Oct 1991
E12
Nothing But Blue Skies
17 Nov 1991
E13
The Strangest Planet
09 Dec 1991