@ImpracticalDino With less than half the letters filled out, you got it!
My favorite of the popular nicknames for comet 12P/Pons-Brooks...which I recently tried and failed to find through binoculars at its peak viewing time. 
Your turn! 
Yip-p-p-pee! Nice nickname for comets, Rainbow.

Pretty cool to know that "Mother of Dragons" relates to astronomy, now Mo-o-o knows. 
Sucks to hear that you couldn't find them during peak viewing time. I hope the time to see those comets again come around soon for you. 
It was this comet in particular, which won’t be visible again until 2095, but I’m hopeful I will have chances to see others!
Just a question, though, how’d you get the answer without already knowing what it meant?
Anyway—Y?
Dang! Yo-o-ou may or may no-o-ot be still alive to see that comet! Lo-o-oks pretty, both of them. But hey, maybe yo-o-ou got some rainbowface anti-aging device to help with that?

And as for your question, the last two words Mo-o-o immediately knew, hehe-hahaha!

It was that first word that Mo-o-o had some trouble with. But after a 20 minute brainstorm, Mo-o-o got the answer!

And the irony is, if it weren't for the reduced amount of guesses, Mo-o-o would've just guessed a letter instead of thinking about the whole phrase to solve!

_ _ _ _ _
Correct:
Incorrect: E, A, I, Y
Guesses Left:
2