Lift off! China launches uncrewed Mars probe

The launch is China’s first independent mission to another planet and a display of its technological prowess.

China launch
The Long March 5 Y-4 rocket, carrying an uncrewed Mars probe of the Tianwen-1 mission, takes off from Wenchang Space Launch Centre in Wenchang, Hainan Province, China [Carlos Garcia Rawlins/Reuters]

China successfully launched an uncrewed probe to Mars on Thursday – its first independent mission to another planet – in a display of its technological prowess and ambition to join the United States by successfully landing and operating a rover on the red planet. 

China‘s largest carrier rocket, the Long March 5 Y-4, blasted off with the probe at 12:41pm (04:41 GMT) from Wenchang Space Launch Centre on the southern island of Hainan.

In 2020, Mars is at its closest to Earth, at a distance of about 55 million km (34 million miles), in a window of about a month that opens once every 26 months.

The probe is expected to reach Mars in February where it will try to land in Utopia Planitia, a plain in the northern hemisphere, and deploy a rover to explore for 90 days.

If successful, the Tianwen-1, or “Questions to Heaven”, the name of a poem written two millennia ago, will make China the first country to orbit, land and deploy a rover in its inaugural mission.

ChinaLiu Tongjie, spokesman for China’s Mars exploration mission, (second from left) speaks during a news conference next to Meng Hua, Director of the Press Office of China’s National Space Administration (CNSA), Mao Wanbiao, deputy chief of the launch mission command and Wang Jue, chief commander of the Long March 5 Y-4 rocket, after its launch carrying an unmanned Mars probe of the Tianwen-1 mission, at Wenchang Space Launch Centre [Carlos Garcia Rawlins/Reuters]

Since 1960, half of all the 50-plus missions to Mars including flybys had failed, due to technical problems. Only a handful attempted to land on the planet.

Challenges multiply for those attempting a landing – from ensuring a precise deceleration of the spacecraft to navigating the planet’s sometimes violent atmosphere.

“The mission must necessarily be challenging, and not be following in the footsteps of others completely,” Liu Tonjie, mission spokesman, told Reuters news agency in an interview after the launch.

“This is an exploration project, so there will be no 100 percent assurance of success. If the mission is unsuccessful, or if there are problems, we will continue to push ahead, re-establish the project, and recommit.”

China previously made a Mars bid in 2011 with Russia, but the Russian spacecraft carrying the probe failed to exit the Earth’s orbit and disintegrated over the Pacific Ocean.

Eight spacecraft – American, European and Indian – are currently either orbiting Mars or on its surface, with other missions underway or planned.

The United Arab Emirates launched a $200m mission to Mars on Monday, an orbiter that will study the planet’s atmosphere.

The United States’ upcoming 2020 mission costs more than $2bn.

China The Long March 5 Y-4 rocket, carrying an unmanned Mars probe of the Tianwen-1 mission, is seen before the launch at Wenchang Space Launch Centre in Wenchang, Hainan Province, China [Carlos Garcia Rawlins/Reuters]

Liu declined to give a cost estimate for China‘s mission, but said expenses have been “very economical” when spread out over the six years since research and development began in 2014.

New Sino-US frictions?  

The next US mission may be launched as soon as the end of July. The probe will deploy a rover called Perseverance, the biggest, heaviest, most advanced vehicle sent to Mars by the National Aeronautics and Space Administration (NASA).

NASA’s InSight is currently probing the interior of Mars on a plain called Elysium Planitia. Curiosity, a car-sized rover deployed by NASA is studying soil and rocks in Gale Crater, searching for the building blocks of life.

Asked if Tianwen-1 would present new frictions with the United States, Liu told Reuters news agency the Chinese mission is a scientific exploration project aiming not to compete with anyone but cooperate with each other.

“From our point of view, Mars is large enough for multiple countries to explore and carry out missions,” Liu said in an interview, when asked if there was a chance the Chinese rover would meet with Curiosity and InSight.

China‘s probe will carry 13 scientific instruments to observe the planet’s atmosphere and surface, searching for signs of water and ice.

“Scientists believe there was an ancient ocean in the southern Utopia Planitia. At a place where an ancient ocean and land meet, scientists hope to make a lot of discoveries,” Liu said.

Source: Reuters

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