We were astounded to learn that he had survived all those years on a desert island. The Great MacTavish performs astounding feats of magic and levitation!
Advanced English Dictionary
+adjective ~ (to find, learn, see, etc. sth) ~ (at / by sth) ~ (that ...) very surprised or shocked by sth, because it seems very unlikely: an astounded expression + How can you say that? I'm absolutely astounded. + I was astounded to see her appear from the house. + She looked astounded at the news. + The doctors were astounded (that) he survived.
Random quote: Strength does not come from physical capacity. It comes from an indomitable will.: Mahatma Gandhi