**Ask a monkey a physics question thread**

[CoccoBill]

Interesting read guys, thanks. Ong, stick to physics, political science isn't your forte.

[OngBonga]

Interesting read guys, thanks. Ong, stick to physics, political science isn't your forte.

The difference between physics and politics is that physics is not a subject that generally causes division. I'm either right or wrong. Politics is a great deal more subjective. When we talk politics, neither is right or wrong, we're discussing opinions and ideology.

[OngBonga]

Ok a quick bit of googling seems to suggest photons do not curve space, rather anything that absorbs a photon curves space. I'm going to have to do more reading to get a grasp of this.

[OngBonga]

I don't even use google anymore.

A quick bit of duckduckgoing.

[OngBonga]

Let's look at this another way. If we accept that a photon travels from the sun to Earth in zero time through zero space from its FoR, then we accept the photon does not exist in a universe with space and time. It is the observer who lives in this world. Spacetime emerges when an observer is moving at less than c.

If all that exist are photons, then each photon is moving through zero space in zero time, and there exist no observers to contradict this. So how is this any different to all photons existing in the same place at the same time? That's how they "observe" the universe.

Spacetime is something that exists to an observer. A photon is not an observer, as it has no clock.