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Taking a collider to the dark energy problem

Every second, the universe grows a little bigger. Scientists are using the LHC to try to find out why.


Dark Energy Survey completes six-year mission

Scientists have only just begun to study the remarkably detailed map they created of a portion of the sky.


Is there a dark energy particle?

A theoretical particle that adapts to its surroundings could explain the accelerating expansion of our universe.


Universe steps on the gas

A puzzling mismatch is forcing astronomers to re-think how well they understand the expansion of the universe.


The contents of the universe

How do scientists know what percentages of the universe are made up of dark matter and dark energy?


Exploring the dark universe with supercomputers

Next-generation telescopic surveys will work hand-in-hand with supercomputers to study the nature of dark energy.


Is the universe getting bigger or am I getting smaller?

Physicist Jim Pivarski explains ways to think about the expansion of space.


All about supernovae

Exploding stars have an immense capacity to destroy—and create.


Q&A: Marcelle Soares-Santos

Scientist Marcelle Soares-Santos talks about Brazil, neutron stars and a love of discovery.


What is dark energy?

It’s everywhere. It will determine the fate of our universe. And we still have no idea what it is.


The universe at your fingertips

Raw images from the DECam Legacy Survey’s new image archive will appear online the day after they are taken.


DECam’s far-out forays

The Dark Energy Camera does even more than its name would lead you to believe.


Our flat universe

Not a curve in sight, as far as the eye can see.


Physics for the people

Citizen scientists dive into particle physics and astrophysics research.


DECam’s nearby discoveries

The Dark Energy Camera does more than its name would lead you to believe.


Mirror, mirror

After more than six years of grinding and polishing, the first-ever dual-surface mirror for a major telescope is complete.