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Deathblow Dealt to Dark Matter Disks
New data tracking the movements of millions of Milky Way stars have effectively ruled out the presence of a “dark disk” that could have offered important clues to the mystery of dark matter.
From the Edge of the Universe to the Inside of a Proton
The Zoomable Universe, a new book by the astrobiologist Caleb Scharf, the illustrator Ron Miller and 5W Infographics, tours the universe’s 62 orders of magnitude.
Colliding Neutron Stars Could Settle the Biggest Debate in Cosmology
Newly discovered “standard sirens” provide an independent, clean way to measure how fast the universe is expanding.
Scientists Unveil New Inventory of Universe’s Dark Contents
The first major results from the Dark Energy Survey signal the start of a new era of cosmology.
Cookie-Cutter Supernovas Might Come in Different Flavors
Astronomers thought that all Type Ia supernovas shine with the same brightness, making them incredibly useful cosmic yardsticks. But uncertainty over what causes these explosions has led researchers to reconsider their assumptions.
Eva Silverstein’s Spirals and Strings
Daily bike rides, serendipitous interactions and long periods of solo thinking inspire this string cosmologist.
Researchers Check Space-Time to See if It’s Made of Quantum Bits
The newly developed theory of emergent gravity, proposed as an alternative to dark matter, struggles in one of its first trials.
Dark Matter Recipe Calls for One Part Superfluid
A different kind of dark matter could help to resolve an old celestial conundrum.
Discoveries Fuel Fight Over Universe’s First Light
A series of observations at the very edge of the universe has reignited a debate over what lifted the primordial cosmic fog.