SUNSET: 
The Dark Energy Survey Weighs in on Cosmic Tensions
The final release of data from the Dark Energy Survey widens tensions in our understanding of the cosmic evolution.
New Data Hint at Changing Dark Energy — and a Different Cosmic Fate
New data hint that dark energy is weakening over time. If true, it means that our most trusted cosmological models may be wrong.
Release of 4,000 Supernovae to Aid Cosmology
A new survey contains 3,628 Type Ia supernovae — the exploding white dwarfs that astronomers use as cosmological toeholds to gauge our expanding universe.
Euclid Space Telescope Launches to Explore Dark Energy, Dark Matter
The European Space Agency’s new space telescope promises to unlock a key mystery of modern cosmology.
Dark Energy Survey Catalogs 226 Million Galaxies
The latest release from the Dark Energy Survey catalogs millions of galaxies, mapping the history of galaxy clustering across space and time.
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.
Hubble Sheds Light on Dark Matter and Cosmic Expansion
The Hubble Space Telescope, which will celebrate its 30th birthday this April, has images cosmic mirages that yield two remarkable cosmological results.
Dark Energy Survey Releases First Three Years of Data
Results from the first data release of the Dark Energy Survey include eleven new stellar streams in the Milky Way galaxy.
Is Dark Energy a Chameleon?
A lab experiment has all but nixed one of the theories of dark energy, a mysterious force pushing the universe apart.
The Kavli Foundation Q&A: Dwarf Galaxies and the Quest for Dark Matter
Satellite dwarf galaxies orbiting the Milky Way should help scientists better grasp the universe's evolution while also homing in on dark matter's identity.
Best Model Yet for Cosmic Evolution
Astronomers have created the most realistic computer simulation of the universe’s evolution to date, tracking activity across 13 billion years of cosmic history.
Quasars Track Expanding Universe
The most precise measurement yet of the Hubble parameter illuminates dark energy — the elusive entity that’s accelerating the universe’s expansion.
