jul 252012
 
Two Solar System Puzzles Solved

  Comets and asteroids preserve the building blocks of our Solar System and should help explain its origin. But there are unsolved puzzles. For example, how did icy comets obtain particles that formed at high temperatures, and how did these refractory particles acquire rims with different compositions? Carnegie’s theoretical astrophysicist Alan Boss and cosmochemist Conel [continue reading]