Jan 8, 2015 1 min read

Carnegie Science Center will hold its annual “Snowball Day” celebration of the summer solstice, and now is the time to get ready.

All visitors who make a snowball this winter, save it in their freezer and bring it in on June 21 – the first day of summer – will be able to choose what they pay for general admission.

In addition to naming their own price, visitors will be able to launch their snowballs into the Ohio River (weather permitting).

In past years, hundreds of snowballs survived the winter and spring in freezers and made their way to the Science Center – in coolers, freezer bags, frosty coffee cans and plastic storage containers.