Dark matter in the center of galaxy cluster Abell 520
Astronomy

Dark Matter: MACHOs or WIMPs?

December 14, 2016

By Sean Carroll, PhD, California Institute of Technology In the hunt for dark matter, several candidates could make up this mysterious substance. One of the more […]

Ptolemaic-geocentric-model (Image: Unknown/Public domain)
History of Science

The Birth of Modern Science

December 14, 2016

By Steven L. Goldman, PhD, Lehigh University One enduring mystery of modern science is why it developed where and when it did. Had modern science emerged in late Greco-Roman antiquity, […]

1 25 26 27