Philae’s battery is dead. But the mission was a huge success.

This happened a bit more quickly than planned, because Philae bounced twice after it landed, ending up in a shadowy crater, preventing its solar panels from much sunlight.

However, in terms of both scientific data and historical milestones, this mission was a huge success. In an extremely short time, the lander collected all sorts of information that will help us better understand the composition of comets. Additionally, the Rosetta orbiter will continue to orbit the comet for more than a year, collecting still more data.

Together, this research will help us better understand the solar system as a whole.

When Philae landed, its harpoon system did not engage, leading the lander to take a few extremely long bounces, and ending up about a kilometer away from where scientists had planned. They’re still not exactly sure of its location, but hope to use high-resolution photos taken by the Rosetta orbiter to pinpoint it soon.

Because the lander came to rest in a shadowy crater, its solar panels were only able to collect about 90 minutes of sunlight every 12 hours, which meant the craft had to rely largely on its battery. Though ESA scientists used mechanical instruments on the craft to turn it slightly in hopes of getting more sunlight, the effort failed, and Philae powered down Friday evening (EST).

However, during its 57 hours of life on the comet, the craft successfully used all ten of its scientific instruments and gathered all sorts of data about its environment.

Additionally, scientists say that as the comet gradually nears the sun next year, it’s possible the probe would be exposed to additional sunlight and wake back up, allowing for further investigations.

Finally, the key thing to remember is that the original plan called for 80 percent of the science of this mission to be carried out by the Rosetta orbiter, not the lander. Rosetta is capturing hundreds of amazingly detailed photos of the comet and analyzing the dust and gas given off by it as it vaporizes.

All this data is so valuable because the comet likely formed 4.6 billion years ago, from material leftover as Earth and the solar system’s other planets were coalescing. As a result, understanding the composition of this comet — and comets in general — could help us better model the formation of the solar system.

In other words, data collected by a tiny robot on this lopsided, spinning comet, millions of miles away, could provide a window into the history of all life on earth. In the coming years, as scientists analyze this data and publish this research, we’ll learn a whole lot more.

Update: This post was edited to reflect the news that Philae was unsuccessful at extracting a rock sample.