Their strong magnetic fields can produce beams of radio waves that sweep across the sky like a lighthouse, resulting in metronomic radio pulses with intervals ranging from milliseconds to seconds.

David Scott was 32 when he left the note in the lighthouse and worked as a labourer for James Milne & Sons.

The men who wrote the note in 1892 had been at the lighthouse to install a different type of lantern and glazing at the top of the tower.

A Scottish man has landed his "dream job" as a lighthouse keeper on a remote Australian island.

In the track, which she performed on “SNL” earlier this month, Nicks compares herself to a lighthouse, urging women, “Don’t let them take your power.”