Gravity doesn’t discriminate. An experiment in orbit has confirmed, with precision a hundred times greater than previous efforts, that everything falls the same way under the influence of gravity. The ...

Experiments 1 and 2 dealt with ones that Galileo could have done and with a couple of thought experiments. This section deals with an experiment similar to one we know Galileo conducted. Trying to ...

One of the most counter-intuitive notions in physics is that all objects fall at the same rate, regardless of mass, aka the equivalence principle. This was memorably illustrated in 1971 by NASA Apollo ...