General knowledge -21

The sun is not just a lot bigger than planet Earth—it absolutely dwarfs us. In fact, 1,300,000 Earths could fit inside the sun, according to NASA.

A thin graphite core is embedded in the shell of a pencil. The pencil shell is mostly wooden but can be made of plastic or recycled paper.

The Hungarian brothers, Laszlo and George Biro, made the first ballpoint pen in 1894.