BICEP2 results show a 5.3 sigma detection of gravitational waves from inflation’s imprint on the cosmic microwave background (CMB).
How do simulations of galaxy formation stack up against each other and against observations? Find out with the Aquila project, a comparo of many different codes in current use.
How quickly did the Universe become reionized? And how do we know? Find out with Hubble in today’s paper.
A relatively detailed discussion of a classic paper in cosmology, which basically covers everything you might want to know about how structure forms in the Universe on the very largest scales.
Circling problems with our model of the Universe: what can groups of galaxies tell us about Lambda CDM?
Measurements of the circular velocities in groups of galaxies can test whether our current cosmology is correct.