\documentclass{article}

\begin{document}
Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

Hello world!

and some real superscript, e.g. a degree sign:$^\circ$.
\end{document}

