Opinions expressed by Forbes Contributors are their own. I cover aerospace, astronomy & hosted The Cosmic Controversy Podcast. As the full Moon sets, the Sun is about to rise on the opposite horizon.

Earth's axis also "precesses," where the stick through it draws a circle once every approximately 26,000 years. You can see this in the animation below. The length of a day on Earth hasn't always ...

Astronomers have been able to test key consequences of Einstein's theories by studying the way a couple of black holes move around each other. One of these objects is a true colossus - a hole ...

The latter technique relies on the fact that the magnetic dipole moment of protons rotates or, better, 'precesses' at slightly different respective frequencies in water and in fat. For chemical ...