Quanta Magazine Oct 14, 2:04 PM

Triplet of ‘Ghostly’ Galaxies Hints at What Dark Matter Is — and Isn’t

A collision may have left these galaxies without dark matter. That spells trouble for alternative gravity theories. The post Triplet of ‘Ghostly’ Galaxies Hi...

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Quanta Magazine Oct 9, 2:03 PM

How Does Life Unfold? A Landscape Metaphor Comes Into Its Own.

C.H. Waddington’s powerful image of embryonic stem cells specializing on a rolling landscape has captivated biologists since the 1950s. Experimental data is ...

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