So I was browsing twitter and I come across an article about the X-37B touching down in Florida this weekend, I've never heard of this vehicle before. Does anyone have any theories on what it's purpose is, as a quick google search literally brings up nothing, my page was blank, for some reason.

((Link to the article) the independent is a bit shit recently I know but hey ho)

http://www.independent.co.uk/life-style/gadgets-and-tech/news/nasa-x-37b-us-air-force-boeing-landing-florida-cape-canaveral-mission-secret-a7723976.html