The Great Bear is the most familiar star-pattern in the night sky, but it is not exactly what it seems. Patrick Moore explains that, although its seven stars look close together, some are further from each other than they are from Earth.
The first X-ray source far out in space was detected nine years ago. Since then, 100 more have been found. But what are they? Patrick Moore talks to Professor Peter Willmore and Dr. Kenneth Pounds about these mysterious sources.
Mars could have water and life. This is the astonishing information now coming back from the Mariner 9 orbiting probe. Patrick Moore discusses the evidence in the latest photographs with a geologist, Dr. Peter Cattermole.
The Sky at Night with Patrick Moore started on 24 April 1957. In tonight's special edition, Patrick Moore looks back, with Commander Henry Hatfield, at the astonishing changes and advances in astronomical knowledge since 1957.
Patrick Moore explains why Planet X has been so difficult to detect, and what kind of place this dim, cold world at the limits of our solar system would be.
How much did our prehistoric ancestors know about the movements of the sun and moon? Patrick Moore is at Stonehenge to discuss the evidence that ancient monuments were built as observatories or eclipse computers.
A spacecraft, Pioneer F, is on its way to Jupiter, the largest planet in our system and one of the most mysterious. Patrick explains why Jupiter puzzles astronomers, and what sort of picture of the planet we expect Pioneer F to send back.
The Great Spiral in Andromeda is one of the most spectacular objects known to astronomers. Patrick Moore describes our nearest galactic neighbour and other galaxies in our 'local group'.
There may once have been in the solar system an extra planet, destroyed in the remote past and producing the fragments we now know as asteroids. Patrick Moore talks about the 'missing' planet.
New information about Mars is being received from the American space-probe Mariner 9. Patrick Moore and Arthur Cross talk about what this means, and show some of the new charts of the crater-scarred Martian surface.
Are there such things as black holes in space - old stars which have collapsed in on themselves and lost their light? Patrick discusses with Samuel Tolansky, the possible existence of 'collapsars', and the problems it would help to solve.
400 years ago this month, the famous astronomer Tycho Brahe saw a brilliant new star blaze overhead near the 'W' of Cassiopeia. This was a supernova, one of only 3 in recorded history. Patrick talks about these dramatic stellar explosions.
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By what name was The Sky at Night (1957) officially released in Canada in English?