* Astronomy

Experts are trying to identify a huge metal container that has been washed up on a beach in the Western Isles.
The tank, which is 27m high, has no markings and is thought to have fallen from a ship before being washed up on the west of Benbecula.
It was discovered by a dog walker on Poll Na Crann beach - known locally as Stinky Bay - near Griminish.

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The beach is known as Stinky Bay because of the fermenting seaweed found there.