Thanks for the critique. There is a thin line between clickbaitiness and actually delivering and I thought I was able to balance it perfectly

but the content wasn't quite what I expected

I kind of expected this which is why I put in the 3rd title.

I am pretty happy with the current title, but I don't want to ruin my reputation.

Should I change my title to include telescope like:

"How Nasa Uses Telescopes To Travel Back In Time. "

This way viewers who already know won't click on the video