A recent uptick in the discovery of the smallest, oldest galaxies benefits studies of dark matter, galaxy formation and the evolution of the universe.
Scientists don’t yet know what dark matter is made of, but they are full of ideas.
It’s not easy being clean.
New technology and new thinking are pushing the dark matter hunt to lower and lower masses.
Amateurs and professionals share the credit in the newest publications from the Space Warps project.
Dark matter experiments are becoming so sensitive, even the ghostliest of particles will soon get in the way.