China launches mission to bring back material from moon
WENCHANG, China — China launched an ambitious mission on Tuesday to bring back rocks and debris from the moon’s surface for the first time in more than 40 years — an undertaking that could boost human understanding of the moon and of the solar system more generally.
Chang’e 5 — named for the Chinese moon goddess — is the country’s boldest lunar mission yet. If successful, it would be a major advance for China’s space program, and some experts say it could pave the way for bringing samples back from Mars or even a crewed lunar mission.
The four modules of the Chang’e 5 spacecraft blasted off at just after 3:30 p.m. EST Monday atop a massive Long March-5Y rocket from the Wenchang launch center along the coast of the southern island province of Hainan.
Minutes after liftoff, the spacecraft separated from the rocket’s first and second stages and slipped into Earth-moon transfer orbit. About an hour later, Chang’e 5 opened its solar panels to provide its independent power source.
Spacecraft typically take three days to reach the moon.
The launch was carried live by national broadcaster CCTV which then switched to computer animation to show its progress into outer space.
The mission’s key task is to drill 2 almost 7 feet beneath the moon’s surface and scoop up about 4.4 pounds of rocks and other debris to be brought back to Earth, according to NASA. That would offer the first opportunity for scientists to study newly obtained lunar material since the American and Russian missions of the 1960s and 1970s.
The Chang’e 5 lander’s time on the moon is scheduled to be short and sweet. It can only stay one lunar daytime, or about 14 Earth days, because it lacks the radioisotope heating units to withstand the moon’s freezing nights.
The lander will dig for materials with its drill and robotic arm and transfer them to what’s called an ascender, which will lift off from the moon and dock with the service capsule. The materials will then be moved to the return capsule to be hauled back to Earth.
The technical complexity of Chang’e 5, with its four components, makes it “remarkable in many ways,” said Joan Johnson- Freese, a space expert at the U.S. Naval War College.
“China is showing itself capable of developing and successfully carrying out sustained high-tech programs, important for regional influence and potentially global partnerships,” she said.
In particular, the ability to collect samples from space is growing in value, said Jonathan McDowell, an astronomer at the Harvard-Smithsonian Center for Astrophysics. Other countries planning to retrieve material from asteroids or even Mars may look to China’s experience, he said.
While the mission is “indeed challenging,” McDowell said China has already landed twice on the moon with its Chang’e 3 and Chang’e 4 missions, and showed with a 2014 Chang’e 5 test mission that it can navigate back to Earth, re-enter and land a capsule. All that’s left is to show it can collect samples and take off again from the moon.
“As a result of this, I’m pretty optimistic that China can pull this off,” he said.
The mission is among China’s boldest since it first put a man in space in 2003, becoming only the third nation to do so after the U.S. and Russia.
Chang’e 5 and future lunar missions aim to “provide better technical support for future scientific and exploration activities,” Pei Zhaoyu, mission spokesperson and deputy director of the Chinese National Space Administration’s Lunar Exploration and Space Engineering Center told reporters at a Monday briefing.