“The optical clock community is strongly motivated to obtain the best possible set of measurements before the SI second is ...

The precursors of heavy elements might arise in the plasma underbellies of swollen stars or in smoldering stellar corpses. They definitely exist in East Lansing, Michigan.

Here's the Image of the Week as voted on by the public. Check out the latest raw images below, and "Like" your favorites. Come back at the beginning of the week to see the public's favorite. Full ...