Which is the largest and shortest distance measured?

Question

hey, i need to know it, but i cant find these info, please help me :D

Answer 1

The largest unit of measure I am familiar with is a megaparsec, or 1,000,000 parsecs. This distance is equal to 19,173,000,000,000,000,000 miles.

The smallest unit of measure is the Planck length, which is equal to 1.6*10^-35 m.

Answer 2

the largest distance measured is the radius of the observable universe. you have to look it up yourself. diameter is calculated from that, since nobody can actually measure it.

smallest will be sub-atomic dimension of some sort. not sure which. so many particles keep showing up in accelerators.

Answer 3

The Hubble limit is about 10^26 meter. Distance to galaxies close to the Hubble limit is not measured directly. Instead, we estimate the distance based on theories about the expansion rate of space and how it affects the red shift of light.

The Planck length is about 10^-35 meter. Small measurements require big and powerful particle accelerators, like the LHC. We can't measure anything smaller than about 10^-19 meter, which is roughly the size of an electron.