Astounding Adventures of Dr X

More from Champion... possibly from Tintin.

Update
As with 'Hunter Without Guns' above I'm pretty sure I've identified this one. It's 'Alain Landier' from Tintin, drawn (and scripted?) by Albert Weinberg. The character in the strip looks like Landier but the clincher is that rocket on the third page which is a dead ringer for the ship on the cover of Tintin (France) #710 (1962); the cover perfectly fits this episode of 'Dr X'. I'll stick it in after the strip... see if you agree. (The pic is from the BDoubliées page on 'Alain Landier'.)