The night sky appears perfectly still, but the universe is constantly changing in ways the human eye cannot see. By combining decades of astronomical observations, scientists have created remarkable ...

When an object moves extremely fast—close to the speed of light—certain basic assumptions that we take for granted no longer apply. This is the central consequence of Albert Einstein's special theory ...

Add Yahoo as a preferred source to see more of our stories on Google. In a world first, scientists have filmed atoms in motion, capturing their thermal vibrations in real-time with stunning clarity.

A researcher with the European Space Agency in Darmstadt, Germany, equipped with a VR headset and motion controllers. — Photo: ESA, via Wikipedia (CC BY-SA 3.0 IGO) A researcher with the European ...

Perhaps the most persistent nonsense in physics: the perpetual motion machine. Bad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the ...