Our good friends at Google run a daily puzzle challenge and asked us to help get them out to the geeky masses. Each day’s puzzle will task your googling skills a little more, leading you to Google mastery. Each morning at 12:01 a.m. Eastern time you’ll see a new puzzle, and the previous day’s answer (in invisitext) posted here.

SPOILER WARNING:
As a test, we’re going to leave the comments on so people can work together to find the answer. As such, if you want to figure it out all by yourself, DON’T READ THE COMMENTS!

Also, with the knowledge that because others may publish their answers before you do, if you want to be able to search for information without accidentally seeing the answer somewhere, you can use the Google-a-Day site’s search tool, which will automatically filter out published answers, to give you a spoiler-free experience.

And now, without further ado, we give you…

TODAY’S PUZZLE:

The Bayeux Tapestry depicts a visit from a celestial body that was considered a bad omen in medieval times. What year did this “apparition” next appear?

YESTERDAY’S ANSWER (mouseover to see):

Go to Google Patents and search [patent 135,245] to find “Improvement in Brewing Beer and Ale Pasteurization,” by Louis Pasteur in 1873. Add 13 years to 1873 to get 1886. Search [pasteurization beverage 1886] to learn that in 1886, pasteurization was suggested by Franz von Soxhlet as a way to extend the shelf life of milk.