Now, when Google shows a Knowledge Graph panel for a search query, it contains a share icon which lets searchers share the search results on Facebook, Twitter, Google+, through email or with a short link.
The share icon is situated on the left of the logo in the right-side knowledge panel. Here is a picture of how it looks:
When you click on it, it pops open this sharing box, giving you the option to share the search page on Facebook, Twitter, Google+, through email or with a short link. Here is a picture: