christmas card

This is a unique idea developed and implemented by scientists from the National Physical Research Department (NPL) of the UK National Metrology Agency.

A Dutch astronomer affirmed that the classic Christmas scene was popularly printed on many books, publications and greeting cards that had a very basic error.

Christmas wishes from aliens, stuffed Christmas cake ... are a series of Christmas cards

Scottish scientists claim to have produced the world's smallest Christmas card, which is only twice as large as human hair.