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Tianwen 1



Tianwen 1 (formerly Huoxing 1) is a Chinese Mars mission comprising a lander and orbiter scheduled to launch on a Long March 5 Y-4 booster in July 2020. The scientific objectives of the mission are to study martian topography and geology, characterize the soil and its water-ice content, determine the composition of the surface material, profile the martian ionosphere, climate, and environment, and constrain the gravity and magnetic fields and the interior structure.

The mission will make a 7 month trip to Mars, arriving in early 2021. The orbiter will use high-resolution cameras to search for the nominal landing site. The rover will make a landing somewhere in the Utopia Planitia region. It has a mass of aout 240 kg and carries camearas, subsurface radar, laser-induced breakdown spectrometer, magnetometer, and a atmospheric sensors.

The name Tianwen means "Questions to Heaven" the name of a poem by Qu Yuan. Huoxing is based on the Chinese word for "Mars".

Alternate Names

    Facts in Brief

    Launch Date: 2020-07-01
    Launch Vehicle: Long March 5
    Launch Site: Xichang, Peoples Republic of China

    Funding Agency

    • China National Space Administration (Peoples Republic of China)


    • Planetary Science

    Additional Information

    Questions and comments about this spacecraft can be directed to: Dr. David R. Williams



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