Patrick Moore is joined by Professor Glenn White of Queen Mary and Westfield College to examine the centre of the Galaxy, a mysterious region some 25-million light-years from earth.
Dr Jasper Wall of the Royal Greenwich Observatory joins Patrick Moore for a discussion of what quasars have to say about the universe.
The zodiacal light is a cone-shaped glow that rises from the horizon after sunset or before sunrise. Dr John James joins Patrick Moore to examine this phenomenon.
For the 40th anniversary of The Sky at Night, Patrick Moore is joined by some of the world's leading astronomers to trace the story of the telescope.
Dr John Mason talks to Patrick Moore about the interest in Hale-Bopp.
Planetary geologist Dr Peter Cattermole gives Patrick Moore the latest news on Nasa's Pathfinder.
Patrick Moore explains what small telescopes will reveal on the bright planets now visible at night, and Dr Peter Cattermole gives the latest news about the space probes to Mars.
A look at the work and significance of the Earth satellite Hipparcos.
A new probe is being launched toward Titan, Saturn's largest satellite.
Patrick Moore examines powerful new equipment that is revolutionising astronomy.
Patrick Moore explains why the stars differ from each other in colour.
White Dwarf stars have used up their "nuclear fuel" and are so dense that a mere cupful would weigh tons. Patrick Moore discusses these feebly-shining stars with Professor Chris Kitchin.