How China's Chang'E-3 mission and its APXS instrument revealed evidence of young lunar volcanism, rewriting the Moon's geological history.
Discover how NASA's Curiosity rover uses the Alpha Particle X-ray Spectrometer (APXS) to uncover Mars's elemental composition and geological history.
Discover how Martian dust affects our search for alien life and how NASA's Curiosity rover overcomes this challenge to reveal Mars' hidden secrets.