The ratio of lead and potassium-argon isotopes in this block of mineral components including olivine, pyroxene, feldspar and glass gives it an age of roughly 4.57 billion years, which makes it ...

NASA's Perseverance rover has revealed new clues about Mars' volcanic past. While most people searching for signs of alien life these days might have their eyes on the exoplanet K2-18b, one team of ...