China's Tianwen-2 Nears Kamoʻoalewa for 2027 Sample Return as NASA's $11 Billion Mars Plan Stalls
Updated
Updated · spacedaily.com · Jun 10
China's Tianwen-2 Nears Kamoʻoalewa for 2027 Sample Return as NASA's $11 Billion Mars Plan Stalls
3 articles · Updated · spacedaily.com · Jun 10
Summary
Tianwen-2 is days from reaching near-Earth asteroid Kamoʻoalewa, with ground tracking in early June indicating it may be preparing an arrival burn ahead of a planned late-2027 sample return.
The mission targets tens to hundreds of grams from the 40-to-100-meter asteroid, whose origin is disputed between a lunar fragment theory and a newer LL-chondrite, Flora-family scenario.
That puts China closest to the next major sample-return milestone as NASA lacks a funded mission to retrieve roughly 30 Perseverance tubes cached in Jezero Crater after Congress dropped the existing Mars Sample Return architecture.
NASA's joint plan with ESA had swelled to about $11 billion and risked slipping into the 2040s; lawmakers instead created a $110 million Mars Future Missions technology line with no approved retrieval flight.
Beyond Tianwen-2, Japan's MMX aims to return about 10 grams from Phobos in 2031, while China's Tianwen-3 targets at least 500 grams from Mars around 2030-2031.
With NASA’s mission halted, could another nation retrieve America’s priceless Mars samples?
As China and Japan lead the sample race, what is America’s next deep space move?
Will China's Mars mission be the first to return definitive proof of ancient alien life?
From Mars Setbacks to Asteroid Success: The 2026 Turning Point in US-China Planetary Exploration Rivalry
Overview
In early 2026, NASA's Mars Sample Return mission was effectively canceled after the U.S. Senate ended its funding, following NASA's own admission that the plan was unworkable. This decision came despite a better budget outlook, as the mission's high costs and tight schedule made it too complex to continue. As a result, the Perseverance rover's collected samples remain stranded on Mars, and the scientific community is now searching for new ideas. This setback highlights the challenges of ambitious space missions and marks a turning point for future U.S. planetary exploration strategies.