Read article: A triangle that matters Particles and interactions Feature A triangle that matters Measuring the unitarity triangle
Read article: Probe seeks changes in fine-structure constant Cosmology Research update Probe seeks changes in fine-structure constant Microwaves illuminate atomic transitions from the dark ages
Gravity Research update Extra dimensions could leave trace in Big Bang’s aftermath Shape of dimensions could affect observations by WMAP and Planck
Read article: Blog life: Cosmic Variance Particles and interactions Opinion and reviews Blog life: Cosmic Variance Part two of our new blog column
Read article: Stringing physics along Particles and interactions Opinion and reviews Stringing physics along The problem with string theory
Read article: Stars meet a darker death Stars and solar physics Research update Stars meet a darker death Supernovae not seen after long gamma-ray bursts
Read article: Dark energy dates back nine billion years Dark matter and energy Research update Dark energy dates back nine billion years Ancient supernovae cast light on our expanding universe
Stars and solar physics Research update On the case of the “missing” helium Computer simulation of low-mass stars could explain the shorftall in the measured amount of helium-3 in the cosmos