ESA’s Rosetta mission stands as one of the boldest in European space history. In 2014, after ten years in space, Rosetta ...

Philae's initial touchdown point, marked by a red cross, was almost exactly in the center of the targeted landing zone. It ended up bouncing more than half a mile away.

The Philae lander from European Space Agency's Rosetta mission's landed on Comet 67P/Churyumov-Gerasimenko. Credit: ESA - ...

Philae made history on Nov. 12 when it landed on the speeding comet, marking the culmination of a 10-year, 4-billion-mile journey to the comet by hitching a ride with the Rosetta spacecraft.

While Philae slept, the Rosetta probe has continued to orbit the 2.5-mile wide comet, collecting data and making observations to send back to the team on Earth as the comet speeds closer to the sun.

The Philae probe is alive and well a day after the first successful spacecraft landing on a comet, but scientists are still trying to figure out exactly where it is on its new home.

Philae, the first spacecraft to land on a comet, delighted scientists this weekend by waking up and reestablishing contact with Earth, seven months after running out of power. It “spoke” for ...

Philae’s Ptolemy instrument aims to answer this question by comparing the ratios of different isotopes within Comet 67P. A given element is defined by the number of protons in its nucleus.

The Rosetta spacecraft's Philae lander is shown sitting on Comet 67P/Churyumov-Gerasimenko after becoming the first space probe to land on a comet on November 12, 2014.

Knowing Philae’s location would also make it easier to predict whether it will indeed wake up as the comet nears the Sun in May. A rendering of the Rosetta orbiter, next to Philae and the comet.

Poor little Philae is still lost, missing since just days after its historic comet landing in November. European Space Agency scientists know roughly what kind of terrain its wedged into -- and ...

Yesterday, the Philae lander separated from the Rosetta spacecraft, descended to the comet 67P/Churyumov-Gerasimenko, and then … what, exactly? It was supposed to fire harpoons, reel itself down ...