23 April

I like Brian Cox. And he's a Professor of Physics. But he's made me come back to gravity again. He said, while riding the vomit comet: "by simply falling at the same rate as the plane, for a few, fleeting moments, we are all free of gravity's grip". Sorry Brian, there's as much gravity 'gripping' you there as there is on me, sitting in my chair. Otherwise you wouldn't be falling. I find even highly trained scientists and engineers often don't understand weightlessness. It has nothing to do with weight at all.