Design and build a space telescope is something that takes a long time. In fact, when the 2.0 Hubble was launched into space, astronomers had already been several months working on the Hubble 3.0, which so far has been dubbed ATLAST.
Scientists have plans to equip Hubble with a mirror 3.0 quite large, since the larger the mirror leads fainter the images will be obtained. How big is this mirror?
To give you an idea, the Hubble 2.0 has a...
