Phoenix chokes on ‘clumpy’ Martian soil
NASA’s Phoenix Mars lander has hit a glitch in its first attempt to sample Martian soil - the Red Planet’s surface may have proved too “clumpy” for one oven in the Thermal and Evolved-Gas Analyzer (TEGA).
Phoenix recently scooped up a cup-sized sample of material for the “high-temperature furnace and mass spectrometer” TEGA, which features screened openings so that only particles less than 1mm can pass into the device’s miniature ovens. Once inside, they’re slowly heated up during a week’s analysis to determine the soil’s water and mineral content.
That’s the plan, but an infrared beam which is supposed to confirm particles have entered the first oven hasn’t as yet detected any, and according to NASA, scientists “suspect the soil may be clumped together too tightly”.