Galileo
truth is, I don't think anyone has. It's probably just one big government LIE.
Mister Edwin Hubble did just that, before the 1920's, many astronomers thought that our galaxy included everyobject in space, in 1924 Edwin Hubble proved that other galaxies existed beyond the milky way
Edwin Hubble was an astronomer.He proved that there are a lot of other galaxies out there.He proved that those galaxies are moving away from us and the universe is expanding.
Edwin Hubble
Hubble discovered that the nebulas were galaxies based on the powerful telescope at Mt Wilson. The second discoveries was the red shift relationship v=HD shows that the galaxies were outside our own galaxies definitely and quantitatively, using light sources in galaxies that were standard sources that could calibrate the distance.
Edwin Hubble
Edwin Hubble
Edwin Hubble.
Edward Hubble
Eddie Hubble
Edwin hubble >:d
Edwin Hubble ;3