Awful, awful news:

More from the Columbus Dispatch:

An authentic hero and genuine American icon, Glenn died this afternoon surrounded by family at the Ohio State University Wexner Medical Center in Columbus after a remarkably healthy life spent almost from the cradle with Annie, his beloved wife of 73 years, who survives.

John Glenn is, and always will be, Ohio’s ultimate hometown hero, and his passing today is an occasion for all of us to grieve,” said Ohio Gov. John R. Kasich. “As we bow our heads and share our grief with his beloved wife, Annie, we must also turn to the skies, to salute his remarkable journeys and his long years of service to our state and nation.

“Though he soared deep into space and to the heights of Capitol Hill, his heart never strayed from his steadfast Ohio roots. Godspeed, John Glenn!” Kasich said.

May he rest in peace.

We send our thoughts and prayers to his loved ones.

Editor’s note: This post has been updated with additional tweets.