A fun conversation leads to a search for time travelers on social media. While unsuccessful, the researchers sure had fun.

Weather forecasters on exoplanet GJ 1214b would have an easy job. Today’s forecast: cloudy. Tomorrow: overcast. Extended outlook: more clouds.

DETROIT — Protons and neutrons, the particles in an atomic nucleus, are made of smaller pieces called "quarks." Some types of quarks can form particles that exhibit surprising behaviors.

Single-particle study identifies possible path to improved conversion of sunlight to electricity in photovoltaic devices.

Record power-conversion efficiency at Los Alamos from quantum-dot sensitized photovoltaics.

CfA study finds tablets make perfect platform for 3-D simulations.

Science Update - A look at CfA discoveries in this month's journals.