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The Sky at Night

Season 16 • Episode 6 • The Tenth Planet?

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The Sky at Night Season 16, Episode 6: The Tenth Planet?

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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. Watch The Sky at Night Season 16, Episode 6 The Tenth Planet? in HD free online. Enjoy high-quality streaming of The Sky at Night Season 16, Episode 6 and share your thoughts in the comments below!

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Episodes

13 episodes
1

The Great Bear

The Great Bear is the most familiar and conspicuous star-pattern in the night sky all the year round: 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.
2

X-Ray Stars

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 a recent successful British experiment to track down one of these mysterious sources by using rockets.
3

Mars - A Dynamic World

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, and explains the significance of these revelations. Have you a question about astronomy you would like to ask Patrick Moore? In the next Sky at Night on 27 March he will answer as many as he can in the time available. Send your questions - on a postcard - to: The Sky at Night, [Address removed]. Sorry, Patrick Moore cannot reply to questions not included in the programme.
4

What Do You Want to Know?

What is a neutron star? a quasar? a pulsar? a black hole in space? Patrick Moore answers your questions.
5

Fifteenth Anniversary

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. He discusses recent developments in 'invisible astronomy' with Professor Anthony Hewish, whose team discovered the first pulsar, and with infra-red astronomer Professor Jim Ring. Finally, he looks forward to the discoveries we can expect in the next 15 years.
6

The Tenth Planet?

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.
7

Midsummer and Megaliths

How much did our prehistoric ancestors know about the movements of the sun and moon? Patrick Moore is at Stonehenge to watch the midsummer sun rise over the Heel Stone, and to discuss with Professor Gerald Hawkins the evidence that ancient monuments were built as observatories or eclipse computers.
8

Jupiter - The Colossal Planet

An unmanned spacecraft, Pioneer F, is on its way to Jupiter, the largest planet in our system and one of the most mysterious. Patrick Moore explains why Jupiter puzzles astronomers, and what sort of picture of the giant planet we expect Pioneer F to send back.
9

The Andromeda Galaxy

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.'
10

An Exploded Planet?

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 and its possible connection with the numerical relationship known as Bode's Law, which has puzzled astronomers for generations.
11

Mars

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.
12

Collapsing Stars

Are there such things as 'black holes in space' - old stars which have collapsed in on themselves and lost their light? Patrick Moore discusses with Professor Samuel Tolansky, FRS, the possible existence of 'collapsars,' and the problems it would help to solve.
13

Tycho's Star

Four hundred 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 three in recorded history. Patrick Moore talks about these dramatic stellar explosions.