Learning about galaxy evolution with naked red nuggets
A unique population of galaxies may hold the keys to discovering how star formation stops happening in older galaxies.
H0ly Cow! A New Measurement of the Hubble Constant
The field of cosmology just can’t seem to agree on a value of the Hubble constant, so astrophysicists attempt to provide a new, independent measurement using strong gravitational lensing.
Glimpsing the fingerprints of gravitational waves in the early universe
Scientists can use neural networks to glimpse gravitational wave fluctuations from the early universe.
Zoos, Swamplands and Cosmology
Is string theory compatible with observational data? Today’s paper looks at how avoiding the swampland of unsuccessful string theories can mean violating reliable constraints on cosmological quantities.
Ideal cosmic yardstick: neutron star black hole mergers as standard sirens
Neutron star black hole mergers are an ideal way to measure the Hubble constant.
Satellite Galaxies All in a Row—How So?
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?