From Stars to Planets: The Loners
The word planet means “wanderer”; the Greeks called them planētēs aster, “wandering stars”. Indeed planets travel on their orbits, wandering around their stars ...
Month: August 2011
From Stars to Planets: Objects in Space and Habitability Potential
Only about 4% of the total mass of the Universe is made of atoms or ions, and thus represented by chemical elements. Hydrogen is the most abundant element, maki...