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10/20/16

99 percent invisible

With a small side project, astronomers discover a new type of galaxy.

08/10/16

#AskSymmetry Twitter chat with Risa Wechsler

See cosmologist Risa Wechsler's answers to readers' questions about dark matter and dark energy.

08/10/16

Dark matter hopes dwindle with X-ray signal

A previously detected, anomalously large X-ray signal is absent in new Hitomi satellite data, setting tighter limits for a dark matter interpretation.  

08/09/16

The contents of the universe

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

07/21/16

Dark matter evades most sensitive detector

In its final run, the LUX experiment increased its sensitivity four-fold, but dark matter remains elusive. 

01/19/16

A speed trap for dark matter

Analyzing the motion of X-ray sources could help researchers identify dark matter signals.  

12/14/15

LUX maps where dark matter isn't

The LUX experiment has drawn the best picture yet of what dark matter particles cannot be.

12/01/15

What could dark matter be?

Scientists don’t yet know what dark matter is made of, but they are full of ideas.