From a distance, these carbon planets would be difficult to tell apart from more Earth-like worlds. Their masses and physical sizes would be similar
Humanity is on the threshold of being able to detect signs of alien life on other worlds. By studying exoplanet atmospheres, we can look for gases like oxygen and methane that only coexist if replenished by life. But those gases come from simple life forms like microbes. What about advanced civilizations? Would they leave any detectable signs?
MIT/Harvard-Smithsonian Center for Astrophysics unveil "Illustris," a sophisticated computer program to recreate the evolution of the universe in high fidelity.
CfA study finds tablets make perfect platform for 3-D simulations.