Did you know that you can weight Google searches by repeating a search term?
Try searching for farm animals cows chickens pigs and then search for farm animals cows chickens pigs pigs pigs pigs pigs pigs pigs pigs pigs pigs pigs. You'll see the second search is much more pig-oriented, though its results more generally pertain to farming and farm animals.
Google's query limit is 32 words. Sinker Search takes a query and a word to be emphasized in the search - the "sinker" that weights your results a certain way - and builds a Google search containing the query once and the sinker term as many times as it will fit inside Google's query limit. You also have the option to do a "half-sink," where the sinker term is used half as often. This is useful when your sinker term is completely overwhelming your search results.
How it works
By repeating a single term multiple times in your query, you "weight" Google's results toward that term without completely changing the context of your search.
For example, with the main query space exploration
and the sinker term Mars
, you'd get:
This gives you results about space exploration with a strong focus on Mars, without losing the broader context.