An amazing feature at Jodrell Bank was the display of clocks in the café. The clock for Venus goes backwards because it rotates the wrong way. It is also very hard to see the second hand moving because a day lasts longer than a year on Venus,
The second hand for Jupiter flies round because the planet spins so quickly.
The clock has stopped for the black hole.
These are all so very effective. But we loved the notice below for Earth because we can see the radio aerials concerned from the back window of this house. Hello, Anthorn!
