Chang'e 7

Chang'e 7 (Chinese: 嫦娥七号; pinyin: Cháng'é qīhào) is a planned robotic Chinese lunar exploration mission expected to be launched in 2026 to target the lunar south pole.[5] Like its predecessors, the spacecraft is named after the Chinese moon goddess Chang'e. The mission will include an orbiter, a lander, a mini-hopping probe, and a rover.[6]

Chang'e 7
Mission typeOrbiter, Lander, lunar rover, hoping probe[1]
OperatorCNSA
Mission duration8 years (planned)[2]
Spacecraft properties
ManufacturerCAST
Launch mass8,200 kg (18,100 lb)[2]
Start of mission
Launch date2026 (planned)[3]
RocketLong March 5
Launch siteWenchang
Moon lander
Landing sitePeak near the southeast ridge of Shackleton crater
88°48′S 123°24′E / 88.8°S 123.4°E / -88.8; 123.4[4]
 

Overview

The Chinese Lunar Exploration Program is designed to be conducted in four[7] phases of incremental technological advancement: The first is simply reaching lunar orbit, a task completed by Chang'e 1 in 2007 and Chang'e 2 in 2010. The second is landing and roving on the Moon, as Chang'e 3 did in 2013 and Chang'e 4 did in 2019 (The rover still being active as of 2023). The third is collecting lunar samples from the near-side and sending them to Earth, a task accomplished by Chang'e 5 in 2020 and 2024 by the Chang'e 6 mission. The fourth phase consists of development of a robotic research station near the Moon's south pole.[7][8][9] The program aims to facilitate a crewed lunar landing in the 2030s and possibly build an outpost near the lunar south pole.[10]

Scientific objectives

The official scientific objectives of Chang'e 7 mission are:[11]

  • Investigation and study of lunar surface environment and water ice in its soil.
  • High-precision investigation and study of morphology, composition and structure of the Moon.
  • Investigation and study of interior structure, magnetic field and thermal characteristics of the Moon.
  • General investigation and study of surface environment of the south pole of the Moon.
  • Moon-based observation and study of the Earth's magnetotail and plasmasphere.

Scientific payloads

Chang'e-7 will carry a total of 21 scientific payloads, including 6 international payloads, aiming to conduct detailed exploration of the environment and resources in the south polar region of the moon. Mission objectives include fixed-point landings. In situ observations of the permanently shadowed crater will be made by the mini-hopping probe, which will carry water molecule and hydrogen isotope analyzers.[2][12][13][14]

Lunar orbiter

  • High Resolution Stereo Mapping Camera
    • At an altitude of 100 km, the resolution of the lunar surface is better than 0.5 m, and the imaging width is greater than 18 km
    • At an altitude of 15 km, the resolution of the lunar surface is better than 0.075 m, and the imaging width is greater than 0.9 km
  • Miniature Synthetic Aperture Radar
    • Imaging resolution better than 0.3 m
  • Wide Band Infrared Spectrum Mineral Imaging Analyzer
  • Lunar Neutron Gamma Spectrometer
  • Lunar Orbit Magnetometer
  • Lunar Surface Material Hyperspectral Imager (jointly developed by the Egyptian Space Agency and the Bahrain National Space Science Agency)
  • Moon-based Dual-channel Earth Radiation Spectrometer (developed by the Physical Meteorological Observatory in Davos, Switzerland)
  • Space Weather Global Monitoring Sensor Device (Developed by the Ministry of Higher Education, Research and Innovation of Thailand and the National Astronomical Research Institute of Thailand)

Lunar lander

  • Landing Camera
  • Topography Camera
  • Lunar Surface Environment Detection System
    • Electric field probe
    • Low-energy ion probe
    • Low-energy electron probe
    • Intermediate/high energy particle probe
    • Dust probe
  • Lunar Seismograph
  • Laser Corner Reflector Array (developed by the Italian National Institute of Nuclear Physics-Frascati National Laboratory)
  • Lunar Dust and Electric Field Probe (developed by the Russian Academy of Space Sciences)
  • Moon-based Astronomical Observation Telescope (developed by the International Association of Lunar Observatories)

Lunar rover

  • Panoramic Camera
  • Rover Magnetometer
  • Lunar Penetrating Radar
  • Lunar Raman Spectrometer
  • In-situ Measuring System of Volatiles and Istopes on Lunar Surface

Mini-hopping probe

  • Water Molecule and Hydrogen Isotope Analyzer

Launch

The probe is planned to be launched by a Long March 5 rocket in 2026, from the Wenchang Satellite Launch Center on Hainan Island.[3]

References