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.
Measurements of the circular velocities in groups of galaxies can test whether our current cosmology is correct.
Bet there’s one thing you didn’t know about Kepler: it also tells us a lot about stars! Today, we discuss a paper that uses Kepler data to detect a star’s pulsations; much like humans, stars “breathe”!
Relative velocity in the early Universe between regular matter (baryons) and dark matter enhances an otherwise hard-to-detect signal and makes it likely we can look back even farther into the past.
A quick discussion of Planck’s new value of the Hubble constant, as part of our series on the Planck results.
A classic 1972 paper by Jim Gunn and J. Richard Gott, III describing the growth of clusters from primordial density perturbations and, most famously, the importance of ram pressure stripping in explaining the observed lack of spiral galaxies towards the center of clusters.
A simple analytical model for the light curves of Type Ia supernovae.
Roman Rafikov finds that planets can form around close binaries out of proto-planets much smaller than previously thought, helping alleviate a long-standing problem in planet formation. The gravity of the dusty disk the proto-planets are in damps their speeds down enough to permit bodies that meet to accrete!