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Quantum Leap Or Quantum Mirage? What Happens When...

I recently listened again to Richard Feynman explaining why the flowing of time is probably an illusion. In modern physics time is just a coordinate, on the same footing as space, and the universe can be described as a four-dimensional object — a spacetime block. In that view, nothing really “flows”. All events>

The present day habitability of Mars is an area of research that has exploded hugely in the last decade, to the extent that it's often hard to keep track of everything that's going on. This is by way of background material for my other articles on habitability of Mars. >

Though table salt, sodium chloride (NaCl), is one of the best-known and most studied chemical compounds known, it still has a few mysteries. Under ambient conditions, it crystallizes in a cubic unit cell and is very stable with one sodium atom (Na) and one chlorine atom (Cl). According to the octet rule, all chemical>

A gravity model of the Earth constructed with data from GRACE. Credit: University of Texas Center for Space Research and NASAIt is all about gravity these days. First came GRACE (Gravity Recovery and Climate Experiment) and then we'll have GOCE (Gravity field and steady-state Ocean Circulation Explorer). I'll reveal>

Where is 'sea level' and how far above sea level is a particular place located?
Quite a lot of things may go wrong in bridge building and the inhabitants of the German and the Swiss parts of Laufenburg were looking forward to a new bridge over the Rhine, the High Rhine Bridge, when they were taken aback by>

Researchers have managed to 'pluck' a single photon, one particle of light, out of a pulse of light. >

