54 Chang'e 7 Facts - China's Lunar South Pole Mission

The Mission at a Glance

• Chang'e 7 is scheduled to launch on 24 August 2026 Beijing time (23 August in the United States) from the Wenchang Space Launch Site on Hainan Island.
• It rides a Long March 5, China's heaviest operational rocket and the same type that launched the Chang'e 5 and Chang'e 6 sample-return missions.
• The stack weighs about 8,200 kilograms at launch and carries four separate vehicles: an orbiter, a lander, a rover and a hopping probe.
• It is named, like the whole programme, after Chang'e, the goddess who lives on the Moon in Chinese mythology.
• The target is the rim of Shackleton crater, a 21-kilometre-wide bowl whose edge grazes the lunar south pole.
• The landing itself is planned for November 2026, after roughly two months of surveying the site from orbit.
• The mission's first-listed scientific objective is to investigate "lunar surface environment and water ice in its soil"—water comes before geology on the official list.
• It opens the fourth phase of the Chinese Lunar Exploration Program, the one meant to lead to a robotic research station at the south pole.

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Why the Lunar South Pole

• The Moon's axis is tilted only about 1.5 degrees, so crater floors near the poles never see the Sun and have stayed dark for billions of years.
• Those permanently shadowed regions are among the coldest known places in the solar system, with temperatures just a few dozen degrees above absolute zero.
• Anything that cold acts as a trap: water and other volatiles that drift in freeze and stay, which is why scientists expect ice there.
• NASA's LCROSS mission confirmed water ice at the south pole in 2009 by crashing a rocket stage into Cabeus crater and analysing the plume.
• The flip side of eternal darkness is near-eternal light: some crater rims and peaks are lit for most of the year, ideal for solar-powered landers.
• Chang'e 7's landing site was chosen for exactly that combination—sunlight for power on the rim, shadowed craters within reach of the hopper.
• Landing there is hard: the mission needs to touch down within about 100 metres of its target, on terrain that is steep and unevenly lit.
• India's Chandrayaan-3 became the first spacecraft to land in the south polar region in August 2023, but at about 69 degrees south—far from the pole compared with Shackleton.

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The Hopper

• The hopper is a small six-legged probe that takes off again after landing, using a rocket thruster to jump from sunlit ground into shadowed craters.
• Its reported maximum range is about 15 kilometres in a single hop, which lets it reach terrain no wheeled rover could cross.
• It carries a drill and a water-molecule and hydrogen-isotope analyser, so it can sample frozen soil on the spot rather than relying on remote sensing.
• Samples are sealed, heated and passed through a mass spectrometer to detect water and other volatiles released from the regolith.
• Measuring hydrogen isotopes matters because the ratio of deuterium to ordinary hydrogen can reveal whether the ice came from comets, asteroids or the solar wind.
• After working in the cold and dark, it is designed to hop back to sunlit ground to recharge before the next flight.
• If it works, it will be only the second vehicle after NASA's Ingenuity helicopter to make repeated powered flights on another world—and unlike Ingenuity it has no air to fly in, so every hop is pure rocketry.

Lander, Rover and Orbiter

• The lander carries a seismometer to listen for moonquakes, a first for China's lunar programme and a way to probe the Moon's interior structure.
• A laser corner-reflector array on the lander will let Earth-based observatories bounce lasers off it to measure the Earth–Moon distance with millimetre precision.
• A small Moon-based telescope on the lander will observe from the lunar surface, where there is no atmosphere to blur the view.
• The rover descends from a Yutu-style design like its predecessors and carries a panoramic camera, magnetometer, ground-penetrating radar and a Raman spectrometer.
• Its in-situ volatiles and isotopes instrument means the rover can analyse water-bearing material itself, not just hand the job to the hopper.
• The orbiter flies a high-resolution stereo mapping camera and a miniature synthetic-aperture radar to map polar terrain, including the parts hidden in shadow.
• The orbiter's neutron and gamma-ray spectrometer detects hydrogen in the top layer of soil from orbit, the same technique that first hinted at polar ice decades ago.
• Earth sits low on the horizon at the pole and drops out of view for long stretches, so communications are relayed through Queqiao-2, the satellite China placed in lunar orbit in 2024 for Chang'e 6.

Payloads and International Partners

• The mission carries 21 scientific payloads in total, six of them built with or by international partners.
• Egypt and Bahrain jointly developed a hyperspectral imager for the orbiter to map the composition of surface materials.
• Switzerland's Physikalisch-Meteorologisches Observatorium Davos contributed a dual-channel Earth radiation spectrometer that will watch our own planet from lunar orbit.
• Thailand's National Astronomical Research Institute supplied a space-weather monitoring device to study the solar wind and radiation environment.
• Italy's National Institute of Nuclear Physics built the laser corner-reflector array riding on the lander.
• Russia's Space Research Institute provided the lunar dust and electric field probe, continuing a lunar partnership announced alongside the research-station plans.
• The International Lunar Observatory Association, based in Hawaii, contributed an astronomical observation telescope weighing around 1.5 kilograms.
• Beyond water, the official objectives include studying the Moon's magnetic field and thermal characteristics and using the Moon as a platform to observe Earth's magnetotail and plasmasphere.

The Chang'e Programme So Far

• Chang'e 1, launched in 2007, was China's first lunar orbiter and mapped the whole surface before being deliberately crashed into the Moon in 2009.
• Chang'e 2 orbited in 2010, then left lunar orbit and flew past the asteroid Toutatis in 2012—the first Chinese spacecraft to visit an asteroid.
• Chang'e 3 achieved China's first soft landing in December 2013 with the Yutu rover, the first soft landing on the Moon by anyone since 1976.
• Chang'e 4 made the first-ever landing on the far side of the Moon in January 2019, inside Von Kármán crater, with its Yutu-2 rover.
• Chang'e 5 returned 1,731 grams of lunar samples in December 2020, the first new Moon rocks brought to Earth since the Soviet Luna 24 mission in 1976.
• Chang'e 6 returned 1,935 grams from the far side in June 2024—the first samples ever collected from the Moon's far side.
• Chang'e 5's samples contained volcanic rocks about two billion years old, younger than any returned by Apollo, showing the Moon stayed active longer than expected.
• Each mission pair has served as a test for the next: the landing system proven on Chang'e 3 and 4 is the basis for the precision descent Chang'e 7 needs.

What Comes Next

• Chang'e 8, planned for around 2028 to 2029, is to test resource use on the surface, such as making building material from lunar soil.
• Together, Chang'e 7 and 8 are intended to form the first elements of the International Lunar Research Station, a base China is developing with Russia and other partners.
• China has said it aims to land astronauts on the Moon by 2030, and the south pole surveys from Chang'e 7 feed directly into choosing where.
• NASA's VIPER rover, now slated to fly with a commercial lander in 2027, has a similar water-prospecting goal, so Chang'e 7 could reach polar ice first.
• NASA's Artemis programme is also targeting crewed landings in the south polar region later this decade, making the area the focus of both programmes.
• The mission will succeed or fail in stages—launch, orbit insertion, a November landing and then the first hop—so results will arrive over months, not days.
• Whatever the hopper finds, confirming or ruling out accessible ice at Shackleton will shape how every future Moon base, from any country, is planned.