This guide explains how this is done in the Harvard Style, sometimes called the author-date system. There are two steps to acknowledging your sources: cite your references in the text, to show where you have drawn upon other people's work, and then list them at the end of your work under the heading 'References'.eferencing Referencing means giving a full description of each source you have cited in the text, in a list of references or bibliography, at the end of your work: ï§ Write the list in alphabetical order: put the first authorâs last name first and then his/her initials.
Galileo discovered the 4 moons of jupiter through a telescope which he never invented but was the first to use.
The four largest moons of Jupiter, now called Io, Europa, Ganymede, and Callisto, were discovered by Galileo Galilei himself, and are appropriately known today as the Galilean satellites. Ganymede is the largest moon in our solar system, larger even than Mercury and Pluto.It is also the only moon known to have its own magnetic field. The moon has at least one thick ocean between layers of ice, although it may contain several layers of both materials.he four largest moons of Jupiter, now called Io, Europa, Ganymede, and Callisto, were discovered by Galileo Galilei himself, and are appropriately known today as the Galilean satellites. Ganymede is the largest moon in our solar system, larger even than Mercury and Pluto.