- This image of 67P/CG was shot by Philae's ROLIS instrument during descent. The lander was approximately 2 miles from the comet's surface when the image was taken. (ESA/Rosetta/Philae/ROLIS/DLR)
The European Space Agency's Philae lander has made space history by successfully reaching the surface of comet 67P/Churyumov-Gerasimenko.
The landing, which took place at 11.03 AM ET, was accompanied by rapturous scenes at the ESA’s control room in Darmstadt, Germany.
Philae is the first probe to land on a comet.
"This is a big step for human civilization," said ESA Director General Jean-Jacques Dordain, during a press conference in the Darmstadt control room.
Just before 1 PM ET ESA released an image of the comet taken by Philae during its descent, when the lander was about 2 miles above the surface of 67P/Churyumov-Gerasimenko.
Earlier on Wednesday, the ESA released the first image of its Philae lander separating from the Rosetta mothership on its ambitious mission toward the surface of comet 67P/Churyumov-Gerasimenko.
The separation, which took place around 4 AM ET, marked the start of a 7-hour journey to the comet’s surface. The Rosetta spacecraft and its Philae lander have been on a decade-long mission through the solar system to rendezvous with the comet.
The comet, which is about 2.5 miles wide, travels at speeds up to 84,000 miles per hour.
The washing machine-sized lander was designed to drift down to the comet and latch on using harpoons and screws. During the descent, scientists were powerless to do anything but watch, because the vast distance to Earth — 311 million miles — made it impossible to send instructions in real time.
“The harpoon is going down, we’re sitting on the surface,” said an ESA official in the agency’s control room, shortly after 11 AM ET.
About 40 minutes later, however, an official at the lander control room in Cologne, Germany, said that analysis of Philae's telemetry data indicates that its "anchors did not shoot."
"We cannot with certainty state that it is stable," he added. "We may retry shooting out the anchors."
The plan is that Rosetta and Philae will accompany the comet as it hurtles toward the sun and becomes increasingly active as it heats up. Using 21 different instruments, they will collect data that scientists hope will help explain the origins of comets and other celestial bodies.
The $1.6 billion mission launched in 2004.
The Associated Press contributed to this report.