I always thought it was time, but I've been informed that space/time composes part of the third dimension.

I'm listening to a digital radio broadcast over the internet. Downstairs I can here the same programme on an analogue radio. There is a clear time difference, very noticeable when the time pips came on for the news. Which version of the time should I set I set my clock to - digital or analogue? My watch is radio controlled by the National Physics Laboratory - which time is that set to?

If I've understood this, at least to some extent, everything always travells at the speed of light (or c to be more precise), provided you take account of the speed of travel through time as well as space, something at a fixed point in space travels through time at c and something travelling through space at c ceases to travel through time? The earth, sun etc. are not fixed points in space, they move through space as does our galaxy as well.  My question is really where this puts us on a scale from a fixed point in space too something travelling through space at c, and how much of an effect do we experience (I realise we would be unaware of it), compared to something not moving through space at all.  If I were to look out into deep space and by some weird coalescence of improbabilities were to see a person standing at a fixed point, unmoving in space, how much faster would they appear to age (travel through time) from my perspective (still traveling at normal earth speeds) or would this be the case at all? Many thanks,

Taking account of the earth's orbit of the sun, the sun's orbit of the galaxy and the galaxy's speed through the universe, how fast are we all travelling through space? and, as relativity tells us that the speed we travel affects time, what would happen if we stopped?

Most people know about 3Ds. And some people have theories on 4Ds. So my question is, how many theories on new dimensions(if there is any) have been created? What are these new dimensions called? And have these theories ever been acknowledged by other people?

I read an article in last week's New Scientist that said that if get two atomic clocks and raise one above the other, the higher one will go faster - speeding up time (albeit by a very small amount). Does this mean that by the time you die, your head is older than your feet? If so, by how much?

We all know that 2x/4x = 4x/8x does not tell us what x is because is cancelled out being referenced on both sides.

Describing  an egg as egg shaped does not tell us what the shape of an egg is.

So why do models gravity using a picture of a “gravity hole  in a mesh of time” as if the weight of a ball is distorting a frame of time. This, surly, is a circular reference effectively saying gravity looks like gravity. Additionally this model has some rather poor comparison’s. And if the mesh is three dimensional then what are the axis of this mesh?  Does this imply time have 3 dimension’s?  Showing a picture of a moving ball rotating around a gravity ball includes a reference to time to describe time itself. Giving two layers of self-reference.

Can anyone explain to the lay public what gravity is without using self-reference. ?

Suppose I want to leave an artifact for future/alien civilizations to find.  Putting "Built 2010" isn't much use without external references.  Is there a method of telling a future archeologist the age of this object.

Most people can remember little from before the age of 3, but do "photographic" memories start earlier? And are the earliest photographic memories retained fully formed, unlike fragmented normal memories? Help Laex find an answer. 

Flies are not known for having long memories, which could be why they seem never to tire of flying into windows. Ben12!? would like to know why they don't appear to do themselves any damage when they do this at high speed.

Most memories fade or get corrupted over time, but our sense of time passing is highly variable and little understood. jamie534 is interested in whether the way we measure time affects the way we perceive its passing.

Our brazen attempt to make memory and time the theme of the week runs into the sand with the next question – though there is a never-ending quality to housework: Alexa’s father insists it's harder to wash up in cold water, but she reckons the temperature of the water makes no difference. So which of them is right?.

Finally, remember when you used to write things on paper? Have you ever wondered whether the direction of a writing script indicates the "handedness" of those who invented it? Help grannybuttons answer this intriguing question.