SUNSET: 
New 3D Map of the Universe — and a Growing Cosmological Debate
The Sloan Digital Sky Survey has released a new map of the universe — and the results confirm ongoing tension over the expansion rate of the universe.
BOSS: A Ruler to Measure Them All
Amidst the release of a treasure trove of astronomical data, scientists announce the most precise “standard ruler” yet for cosmological distances.
Dark Energy BOSSes Around the Universe
Astronomers are honing in on the nature of dark energy, a mysterious, repulsive energy that pervades all of space. Among the questions they're trying to answer: does dark energy exist?