Bitmex (one of the largest exchanges at the moment) put an ad on the frontpage of the newspaper's issue exactly 10 years later as a tribute: https://twitter.com/BitMEXResearch/status/108059040132345036...
EDIT: It seems there is a full page ad that goes with the front page one: https://imgur.com/sVBZVfN
The newspaper could go back and change the title in their archives. Single point of failure. Tsk tsk. Should have picked a newspaper that stores their archives in an immutable blockchain.
You have to predict exactly what the headline is going to be though "On the Moon" is a fair guess but the chances you would get "Men walk on the moon" (plus "astronauts land on plain; collect rocks, plant flag" if we're using the subheadline too) exactly correct to fake it are really low. That's only possible on a very small number of dates where there's a known huge event coming up.
That would only prove your block is NOT from before 1969. The date of the article in question is 03/Jan/2009. Which is around the time of the block itself (thus proving the block wasn't generated before 2009).