If not in visible stars and galaxies, the most likely hiding place for the matter is in the dark space between galaxies.

If you look across space with a telescope, you'll see countless galaxies, most of which host large central black holes, ...

But the Big Bang theory predicts that about 5% of the universe’s contents should be atoms made of protons, neutrons and electrons. Most of those atoms cannot be found in stars and galaxies – a ...

A holiday book fair in Del., Thanksgiving in Philly and the Home for the Holidays concert in South Jersey are among weekend event highlights.