Galaxies early on in their lives are actively forming hot, new stars and appear more bluish. Older galaxies are forming fewer new stars and their constituent stars are older on...
The Hubble telescope collects data in analog form. That is because it is a concave mirror which collects light wave and sends them in a focused form to its receivers....
Hubble is not like a regular digital camera in that it doesn't take a single image in one shot. The Hubble's CCD cameras can take monochrome images at a resolution...
Advantage of Hubble is that it is above earths atmosphere.So it can observe with out disturbances from clouds. lightning dust, light pollution etc.. It can observe some infra red and...
So we have to send them to earth orbit above our atmosphere which filters radiations.Certain objects emit only radiation in UV range.So to study them we have to use UV...