ESA Rosetta mission: Philae lander touches down on Comet 67/P

Philae’s parting image of Rosetta, taken shortly after separation

ESA’s Rosetta mission has soft-landed its Philae probe on a comet, the first time in history that such an extraordinary feat has been achieved.

After a tense wait during the seven-hour descent to the surface of Comet 67P/Churyumov–Gerasimenko, the signal confirming the successful touchdown arrived on Earth at 16:03 GMT (17:03 CET).

The confirmation was relayed via the Rosetta orbiter to Earth and picked up simultaneously by ESA’s ground station in Malargüe, Argentina and NASA’s station in Madrid, Spain.

The signal was immediately confirmed at ESA’s Space Operations Centre, ESOC, in Darmstadt, and DLR’s Lander Control Centre in Cologne, both in Germany.

The first data from the lander’s instruments were transmitted to the Philae Science, Operations and Navigation Centre at France’s CNES space agency in Toulouse.

“Our ambitious Rosetta mission has secured a place in the history books: not only is it the first to rendezvous with and orbit a comet, but it is now also the first to deliver a lander to a comet’s surface,” noted Jean-Jacques Dordain, ESA’s Director General.

“With Rosetta we are opening a door to the origin of planet Earth and fostering a better understanding of our future."

"ESA and its Rosetta mission partners have achieved something extraordinary today.”

“After more than 10 years travelling through space, we’re now making the best ever scientific analysis of one of the oldest remnants of our Solar System,” said Alvaro Giménez, ESA’s Director of Science and Robotic Exploration.

“Decades of preparation have paved the way for today’s success, ensuring that Rosetta continues to be a game-changer in cometary science and space exploration.”

“We are extremely relieved to be safely on the surface of the comet, especially given the extra challenges that we faced with the health of the lander,” said Stephan Ulamec, Philae Lander Manager at the DLR German Aerospace Center.

“In the next hours we’ll learn exactly where and how we’ve landed, and we’ll start getting as much science as we can from the surface of this fascinating world.”

Rosetta was launched on 2 March 2004 and travelled 6.4 billion kilometres through the Solar System before arriving at the comet on 6 August 2014.

“Rosetta’s journey has been a continuous operational challenge, requiring an innovative approach, precision and long experience,” said Thomas Reiter, ESA Director of Human Spaceflight and Operations.

“This success is testimony to the outstanding teamwork and the unique knowhow in operating spacecraft acquired at the European Space Agency over the decades.” 

NASA's Morpheus Lander: Prototype Touches Down on Mock Moonscape - Video

A prototype of NASA's Morpheus lander kicked up a cloud of fake moon dust as it touched down softly on a mock lunar landscape in Florida in this week.

On Wednesday (April 30), the Morpheus vehicle dubbed Bravo lifted off for its twelfth free-flight test at NASA's Kennedy Space Center.

The robotic vehicle flew a pre-programmed path that launched it vertically, and then rose to an altitude of more than 800 feet (243 meters), NASA officials said in a description of a video of the mock moonscape flight.

After liftoff, Morpheus then flew sideways 1,300 feet (396 m), hovering over a 65-yard (59 m) square sandbox full of obstacles like rocks and craters.

NASA's Morpheus vehicle prototype is seen just after landing on a mock lunar surface during in this still from a NASA video recording at the Kennedy Space Center in Florida during an April 30, 2014 test flight.

Credit: NASA /Project Morpheus

NASA recently started testing its automated landing and hazard avoidance technology (ALHAT) installed on the vehicle.

This 400-pound suite of computers and three instruments is designed to scan the surface of a potential landing site for hazards, such as a dangerous boulder or crater, so that the spacecraft doesn't crash or tip over as it touches down.

The ALHAT technology mapped the square and identified a safe landing site 4.5 feet (1.4 m) east of the center of the landing pad and targeted that location to gently touch down on the mock lunar surface, NASA officials said.

Chirold Epp

"We've been working a long time, eight years, to prove we can do autonomous, precision landing and hazard avoidance and guidance," Chirold Epp, project manager for ALHAT, said in a NASA statement a week before the latest flight.

"We really need to show the world that everything we've been advertising for eight years works."