China advances Mars science: Tianwen-3 enters construction; Tianwen-1 images interstellar visitor from Mars
China's Tianwen‑3 Mars sample‑return mission has moved into spacecraft construction, targeting a late‑2028 launch to retrieve Martian material and search for biosignatures. Separately, Tianwen‑1's HiRIC camera imaged interstellar object 3I/ATLAS from Mars, showing a coma dominated by large (hundreds of μm) grains and dust speeds of 3–10 m/s.