These points of light are the four satellites, or moons, of Jupiter, discovered by Galileo in the seventeenth century.
(These points of light; are; the four satellites, or moons, of Jupiter) (the four satellites, or moons, of Jupiter; discovered; by Galileo; T:in the seventeenth century)
These points of light the four satellites, or moons, of Jupiter
are discovered
the four satellites, or moons, of Jupiter
by Galileo T:in the seventeenth century