Over on the Internet Explorer Blog, Microsoft has posted results from an extensive comparison of the top five Web browsers. The goal: to determine whether Internet Explorer 9, Firefox 4, Chrome 10, Safari 5, or Opera 11 is able to squeeze the most life out of your laptop’s battery.

A baseline was determined with test systems sitting idle, and then browsers were pointed at about:blank, a news site, the HTML5 Galactic demo, and the IE9 fish tank demo. Perhaps unsurprisingly, IE9 came out on top — though Firefox 4 was a very close second on nearly every test. As you can see, the other browsers didn’t necessarily fare quite as well, with Google Chrome, Safari, and Opera all posting significantly worse scores. In Opera 11′s case, a laptop battery would last over one hour more with Internet Explorer 9 installed.

But what we’d really like to know is where did Microsoft find the dilithium crystals required to run a Galactic Total Power Consumption test…