January 4, 2013
Thorium Could Help Alien Life Emerge
Ian Randall, Physics World
Rocky exoplanets orbiting some Sun-like stars in the Milky Way galaxy could be hotter and more geologically active than Earth and its solar-system companions, according to researchers in the US. The team looked at the abundance of radioactive elements such as thorium, which heat the interior of planets as they decay and thereby play an important role in how planets evolve.
TAGGED: thorium, exoplanet, extraterrestrial life