This week in Astronomy and Physics

A lower limit of Δz > 0.06 for the duration of the reionization epoch

Stochastic Late Accretion to Earth, the Moon, and Mars

Sgr A*: The Optimal Testbed of Strong-Field Gravity

Universal Quantum Viscosity in a Unitary Fermi Gas

Towards a complete treatment of the cosmological recombination problem

Elasticity of Globular Proteins Measured from the ac Susceptibility