New simulations show that early ultraviolet light controlled whether ultra-faint dwarf galaxies could form stars.
The dark matter distribution of a Milky Way mass halo in a Lambda-cold dark matter (LCDM) cosmological simulation. This is the highest resolution simulation of a MW-mass dark matter halo ever ...
Ultra-faint dwarf galaxies—tiny satellite galaxies orbiting the Milky Way—have long been seen as cosmic fossils. Now, a new ...
The Milky Way galaxy grew into its current form with the help of smaller galaxies over time, which it has "consumed" or ...
Dark Energy Spectroscopic Instrument completes five-year survey of 47 million galaxies ...
Scientists have uncovered the true boundary of the Milky Way’s star-forming region using stellar “age mapping.” They found a ...
Scientists continue to push the boundaries of astronomy and cosmology, thanks to next-generation instruments that can see farther and clearer than ever before. Through these efforts, astronomers have ...
Scientists have created the largest and most detailed 3D map of the universe ever made, offering a fresh way to understand ...
The oldest stars in the Milky Way are forcing a fresh look at one of cosmology’s biggest arguments. If some of them are about 13.6 billion years old, as a new analysis suggests, then the universe ...
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