Big Bang and the speed of light

[bradfr]

tight fart said:

Is it possible that the physics of the very large, the universe. Work the same as the very small, an atom?
The more I hear about atoms with particles whizzing around each other the more they sound like space on a large scale.
A scientist on the other day was talking about something so small it could pass through the planet earth without hitting another atom, I could only draw the comparison of something traveling through space.

No, the physics of the very large is actually very unlike the physics of the very small (quantum mechanics). We currently don't understand why there is a difference in the behaviour of very small objects compared to the relatively large (i.e. life size objects, planets, stars, galaxies). Weird stuff occurs on the large scale but even weirder stuff occurs on the very small scale (e.g. particles seemingly existing in two places at the same time).

That scientist was presumably talking about the neutrino. Millions of them are passing through the earth right now however they have so little mass, have no electric charge and only interact via the nuclear weak force and so most of them pass straight through and are relatively undetectable.