Killer Comet by Patrick Moore (1923-2012). This was the fourth Scott Saunders adventure and was indeed written by the astronomer, TV presenter and Xylophone player.
seen from Germany

seen from Malaysia
seen from China
seen from China
seen from China
seen from Russia
seen from United States
seen from Netherlands
seen from Canada

seen from Uruguay

seen from Malaysia
seen from China

seen from Brazil
seen from Germany

seen from Malaysia
seen from Netherlands

seen from Netherlands

seen from Malaysia
seen from United Kingdom

seen from Netherlands
Killer Comet by Patrick Moore (1923-2012). This was the fourth Scott Saunders adventure and was indeed written by the astronomer, TV presenter and Xylophone player.
Taken from Using Computers: Managing Change, 1989
Killer Comet Longplay (Arcade Game) You can't win, but you can blast them, lol...