Possible Clues:

• ---- Heart Mother (Pink Floyd album)
• Cry of discovery after Archimedes
• From Greece I have found that you're a stinker, by the sound of it
• 'By George!'
• Cry of discovery
• Cry of joy on finding something is an alloy
• Shout when you solve a clue?
• ''Finally, what a discovery!''
• Ronald Reagan's alma mater
• Interjection announcing a discovery