The amount of time it takes to arrive at the destination over the distance traveled. Remember time is just a measurement of movement through space. Hence the reason it is called the space-time continuum. You should use this formula: Distance=Velocity/Time
distance
Distance
the galaxy. it goes on forever and you cant measure that
Use trignometry
That would be distance.
You find the object you want to be far from and you measure the distance between it and you.
Distance
Distance
the answer is vernal equinox
Extent
A parallax is hard to measure if it is very small - and this happens when the corresponding object is very far away.
"What do you measure (when) you measure..." ? When you measure an object's temperature, you are measuring the amount of heat the object emits (gives off). There is no such thing as cold, only the absence of heat.