Measuring a white dwarf’s gravitational redshift can help us figure out its mass, but for one of the closest stars to us (Sirius B) the numbers didn’t match with other methods. Today’s paper investigates the discrepancy.
A close examination of thirteen Type Ia supernovae in the earliest days after their initial explosion reveals two distinct sub-populations.
Many satellite galaxies in the local universe are orbiting their parent galaxies in highly coherent planes—yet such structures are vanishingly rare in simulations. What gives?
The annual meeting of the Astronomical Society of Australia happened last week; here’s a short summary of some of the incredible science happening Down Under!
CCDs have been the workhorse of astronomy since the 1970s, but today’s paper shows that we’re still learning about ways they can systematically affect the results of our data.