This one has had people scratching their heads since the 1800s – but can you solve it? The vintage illustration shows a family next to a telescope – but the astronomer is missing. For generations, optical illusions have been a source of amusement.

And this time around, viewers are challenged to find the astronomer hiding in this famous illustration. But can you find the missing stargazer? The puzzle is sure to make your eyes ache but just think of the satisfaction you will feel when you find him…

The trick to this puzzle is to view the image upside down. So how did you fare? Did you manage to find the elusive starger?