distance of the Hubble Space> > Telescope?> > How do we find out its limit?> > > > > > Well a good way is to ask a question such as whether a flashlight> > placed on> > Pluto or Mars or Moon can be seen by the Hubble Space Telescope?> > Have> > a gradation of flashlights on the Moon and see where the Hubble> > ceases> > to> > "see the flashlight.