News Cosmology

Debate grows over whether X-rays are a sign of dark matter

Failure to spot telltale glow from nearby dwarf galaxy sets back search for dark matter

XMM-Newton space telescope

NOTHING TO SEE HERE  The European Space Agency’s XMM-Newton space telescope, illustrated here, didn’t find a possible signature of dark matter coming from the dwarf galaxy Draco.

D. Ducros/ESA

By Andrew Grant

- More than 2 years ago

The search for a suspected calling card of the universe’s most elusive matter has come up empty.