Writer and Editor for planetary.org
Amir Alexander reviews Alan Hirshfeld's newest book,
What’s new at [email protected], the groundbreaking program that asked volunteers to help find interstellar dust particles collected by the spacecraft Stardust.
Amir Alexander's new book about an epic battle over a mathematical concept that shook the old order and shaped the world as we know it.
Latest Planetary Radio Appearances
Phoenix is on its way to Mars