

SN 2011dh is a supernova in the Whirlpool Galaxy (M51)
Looking for a past lecture?
Watch our Video Library
The Marshal Martz Memorial Astronomical Association is a volunteer-run 501(c)(3). Every visit is free — your membership and donations keep the telescopes running and the lectures coming.
Thank you to all at the Martz-Kohl Observatory! The folks there were outstanding!! Brought 3 of my kids there tonight and they were mesmerized. Will definitely be back!! ~Brad H
Copyright © 2026, Martz-Kohl Observatory.